Spn 3251 aftertreatment 1 dpf differential pressure

Aftertreatment 1 Particulate Trap Differential Pressure Current Below Normal Or Open Circuit SA 0 SPN 3251 FMI 5 Particulate Trap Inlet Pressure Data erratic, intermittent, or incorrect ... Check the aftertreatment differential pressure sensor. It's the one with the two tubes running to it from the DPF, most look like an EGR delta p sensor.

Spn 3251 aftertreatment 1 dpf differential pressure. But before you do that monitor the DPF differential and outlet pressure voltage readings at key on engine off, idle and high idle. Let me know what your readings are please. Are there any other faults? ... 1883- Aftertreatment DPF Differential Pressure sensor and 3135. ... have cummins isx 15 with fault cods spn 3251 and spn 3720 need …

Page 71 DIAGNOSTIC MANUAL 1. Downstream Injection (DSI) unit Figure 14 DSI Unit (MaxxForce® DT, 9 and 10 Engines) Downstream Injection (DSI) Unit The DSI unit is connected to the clean side of the low-pressure fuel system, and will provide a metered amount of fuel to the Aftertreatment Fuel Injector (AFI). Page 72 DIAGNOSTIC …

Cummins ISX15 CM2250 (2010-12) Fault Code: 1883 PID: SID 324 SPN: 3251 FMI: 2 Aftertreatment Diesel Particulate Filter Differential Pressure Sensor- Data Erratic, …Lamp: None Reason: An offset in the diesel particulate filter differential pressure sensor reading has been detected. Effect: Possible reduced engine. Skip to content. whatsapp +51955515985; [email protected]; 24/7 Customer Support; Facebook-f ...The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment. ... (DPF) by analyzing the pressure drop over the aftertreatment. Skip to content. whatsapp +51955515985; [email protected];monitoring the fuel pressure gauge. After cranking the engine, look at the following values in the recorded snapshot: Switch Battery, Engine Speed, Injection Control Pressure, and Exhaust Back Pressure. If Switch Battery drops below specification, see “ECM Power” in “Electronic Control Systems Diagnostics.”A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot. The DPF differential pressure sensor plays an important role in keeping the DPF functioning …Be the first to review “Cummins ISX12 CM2250 (2010-12) Fault Code: 2639 (BCL) PID: SID 324 SPN: 3251 FMI: 15 Aftertreatment Diesel Particulate Filter Differential Pressure- Data Valid But Above Normal Operating Range- Least Severe Level” Cancel replyBedsores (decubitus ulcers) are caused by pressure to areas of skin when resting in a position for too long. Complications can be serious. Learn why. Pressure sores are areas of da...

SPN: 3720 – Aftertreatment 1 Diesel Particulate Filter Ash Load Percent FMI: ... buenas tardes tengo un cummins modelo isb6. 7 240 del year 2012con codigo 3251 spn y 2011 spn necesito su ayud por favor ... I have replaced the DPF and cleaned the DOC and replaced the differential pressure sensor and tubes on the DPF and reset the …But before you do that monitor the DPF differential and outlet pressure voltage readings at key on engine off, idle and high idle. Let me know what your readings are please. Are there any other faults? ... 1883- Aftertreatment DPF Differential Pressure sensor and 3135. ... have cummins isx 15 with fault cods spn 3251 and spn 3720 need …I have a code spn 3251, fmi 16, fault is aftertreatment 1 particulate trap differential pressure. Fmi description is data valid but above normal opera aping range- mortally severe level. This is on a … read moreUnder light load operating conditions, it can be necessary to perform a stationary regeneration of the aftertreatment DPF. The soot load in the aftertreatment diesel particulate filter is estimated using the aftertreatment differential pressure sensor and the calculated soot output of the engine. This fault code can be triggered if the ...Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 5715 PID: SPN: 3251 FMI: 10 Aftertreatment 1 Diesel Particulate Filter Differential Pressure- Abnormal Rate of Change Circuit Description The engine control module (ECM) provides a 5 volt supply to the aftertreatment diesel particulate filter differential pressure sensor on the sensor supply ...Be the first to review “Volvo All Engines (2010 Emissions) Fault Code: SPN 5319 FMI 31 PID: Aftertreatment 1 DPF Incomplete Regeneration” Cancel reply Your email address will not be published. Required fields are marked * 0 – GHG14. Diesel Particulate Filter Pressure Out of Range Very High. Table 1. SPN 3251/FMI 0. SPN 3251/FMI 0. Description. This Fault Code Sets when the Diesel Oxidation Catalyst (DOC) Inlet Pressure is 35 kPa (5 psi) Greater than the Diesel Particulate Filter (DPF) Outlet Pressure for More than 10 Seconds. Monitored Parameter. 1) Ignition key in ON position. Observable symptoms 1) Regeneration not possible. Probable cause 1) Connector 2) Open circuit, Signal wire 3) Open circuit, Supply wire 4) Short circuit to ground, Signal wire 5) Wiring harness 6) Aftertreatment DPF Differential Pressure Sensor 7) Aftertreatment Control Module (ACM)

VIN # *****I have two inactive codes bringing up a CEL: 1883- Aftertreatment DPF Differential Pressure sensor and 3135. The differential pressure sensor/tubes/harness have already been changed just looking for direction on what to look for next. ... spn 3251 fmi o says 3251-0 implausible or missing signal. 2015 kenworth esn …VIN # *****I have two inactive codes bringing up a CEL: 1883- Aftertreatment DPF Differential Pressure sensor and 3135. The ... spn 3251 fmi o says 3251-0 implausible or missing signal. 2015 kenworth esn 73886896 vin *****, within ...Cleaning services are always in demand and there are many different segments in the industry, here is how to start a pressure washing business. If you buy something through our lin...Choosing the best pressure washer for your desired application may be daunting. Going through the technical specifications sheet of each machine may seem Expert Advice On Improving...

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The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatmentSPN 5746, FMI 4 Aftertreatment 1 Diesel Exhaust Fluid (DEF) dosing unit heater relay voltage ... Count: 1 DTC 1881 SID 324 SPN 3251, FMI 4 Aftertreatment Diesel Particulate Filter (DPF) Differential Pressure Sensor (DPS) circuit voltage below normal or short to low voltage Active Lamp: Amber Count: 1 DTC 3134High blood pressure (hypertension) is an increase in the force of blood against the arteries in the body. This article focuses on high blood pressure in infants. High blood pressur...Feb 12, 2021 · SPN: 3251 – Aftertreatment 1 Diesel Particulate Filter Differential Pressure FMI: 0 (High—most severe) Count: 1. - Answered by a verified Technician

Cleaning services are always in demand and there are many different segments in the industry, here is how to start a pressure washing business. If you buy something through our lin...If you’re like 1 out of 3 Americans living with high blood pressure, then you and your doctor would probably be happy to see your blood pressure get lower. But is there such a thin...I have a 2012 Freightliner M2 with Cummins engine ISB 6.7, the diagnosis code SPN 3251 After treatment 1 DPF different ial Pressure | FMI=0 - Data Valid But Above Normal Operational Range- Most Severe … read more1) High differential pressure across the filter (> 35 kPa (5 psi / 10.3 in-Hg)) Observable symptoms 1) Low Power 2) Medium to high derate. Probable cause 1) Excessive smoke from the engine 2) Aftertreatment diesel particulate filter (DPF) is loaded with soot 3) Aftertreatment diesel particulate filter (DPF) is loaded with ashVIN # *****I have two inactive codes bringing up a CEL: 1883- Aftertreatment DPF Differential Pressure sensor and 3135. The differential pressure sensor/tubes/harness have already been changed just looking for direction on what to look for next. ... spn 3251 fmi o says 3251-0 implausible or missing signal. 2015 kenworth esn 73886896 vin ... Count: 1 DTC 3567 SPN 5394, FMI 5 Aftertreatment Diesel Exhaust Fluid (DEF) dosing valve current below normal or circuit open Active Lamp: Amber Count: 1 DTC 1881 SID 324 SPN 3251, FMI 4 Aftertreatment Diesel Particulate Filter (DPF) Differential Pressure Sensor (DPS) circuit voltage below normal or short to low voltage Active Lamp: Amber Count ... Engine Exhaust Gas Recirculation 1 Differential Pressure - Voltage Below Normal or Shorted To Low Source 0 ... 1152 3251 1 Abgasnachbehandlung 1 Dieselpartikelfilter (DPF) Differenzdruck Sensor ... Exhaust aftertreatment - Pressure after DPF - Data Erratic, Intermittent or Incorrect 0 Revision 1.0 Page 4 / 24.Are you looking for a book to learn more about pressure washing? This article curates the top books on pressure washing, giving you as much information as Expert Advice On Improvin...Brent Leary conducts an interview with Wilson Raj at SAS to discuss the importance of privacy for today's consumers and how it impacts your business. COVID-19 forced many of us to ...

SPN: 3251 FMI: 0/16 Lamp: Amber ... Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level. The soot load of the aftertreatment diesel particulate filter (DPF) has exceeded the recommended ... aftertreatment DPF in stages 1, 2, and 3. At level 4, the aftertreatment DPF is completely plugged and must ...

4) Plugged aftertreatment differential pressure sensor ports could cause this fault code if pressure is held in the port after the engine is turned off Related Categories DTC TRUCKS , PACCAR , PX-9 CM2350 (2013-17) Tags 2013-17 , CM2350 , Fault Code:1883 , FMI:3251 , PACCAR , PID:SID 324 , PX-9 , SPN:3251 SPN 3251 FMI 15 Aftertreatment 1 Diesel Particulate Filter Differential Pressure : Data Valid But Above Normal Operating Range - Least Severe Level. SPN 3482 FMI 7 Aftertreatment 1 Fuel Enable Actuator : Mechanical System Not Responding Or Out Of Adjustment. SPN 641 FMI 7 Engine Variable Geometry Turbocharger Actuator #1 : Mechanical System Not ... Accepting Donations For My Channel https://cash.app/$TRUCKINGTIPSDIYThanks for watching, If interested in ordering one OTR PERFORMANCE Reset tool use this li...A differentiation strategy can help your business enormously during a recession. But what is a differentiation strategy, and how can you use it to beat your competition? In the fac...A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot. The DPF differential pressure sensor plays an important role in keeping the DPF functioning …May 14, 2019 · It is the metal tubes on the DPF filter in your exhaust. The DPF looks like a muffler. There are two of the tubes. They screw into bungs on each end of the DPF and go somewhere, usually in the middle, to the sensor. At the end of the metal tubes are flex hose sections that can tear or split, then those connect to the sensor. High blood pressure (hypertension) is an increase in the force of blood against the arteries in the body. This article focuses on high blood pressure in infants. High blood pressur...

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Nov 12, 2015 · 2011 Volvo VNL Tractor with D13 Getting the following codes: Particulate Trap Inlet Pressure Current below normal or open circuit MID 128 SID 81 FMI 5 Aftertreatment 1 Particulate Trap Differential Pressure Current Below Normal Or Open Circuit SA 0 SPN. 3251 FMI 5 Particulate Trap Inlet Pressure Data erratic, intermittent, or incorrect MID 128 ... I have a 2011 freigtliner, keeps throwing code fmi 15 spn 3251 aftertreatment 1 differential trap pressure. least severe level. already replaced differential pressure sensor, did stationary regen, …Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level. ISB, ISC, and ISL - Aftertreatment System. CODES: Fault Code: 2639. PID …TROUBLESHOOTING: Check for other fault codes, if codes 3609/3 or 3609/4 are present. Diagnose those codes first. Using DDDL go to service routines> SCR & DPF voltages. Monitor DOC inlet pressure sensor voltage pin 87. If voltage is NOT between 0.44-0.56 volts replace the DOC inlet pressure sensor. Monitor DPF outlet pressure sensor …Frozen, plugged, or restricted aftertreatment DPF differential pressure sensor tubes. Related. Tags: ... Fault Code: 6789 PID: SPN: 3251 FMI: 2/21 Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor – Data Not Rational – Drifted Low” Cancel reply. Your email address will not be published. Required fields are marked *File: 193-t06-2639 Page 1 of 7 ISB6.7 CM2350 B101 Fault Code: 2639 | SPN: 3251 | FMI: 15 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level 1 Restricted intake air filter 2 Aftertreatment DPF differential pressure sensor tubes plugged2017 Volvo VNL670 D13 Fault code SPN-5835 Aftertreatment 1 particulate sensor (From Keeptruckin). Just replaced pressure - Answered by a verified Technician ... My International bus is coding Active Spn 3251 FMI 4 Oc 2 and Active SPN 4795 FMI 31 OC 2 and Prev, ... 1 being aftertreatment 1 particulate trap differential pressure. i took the …Companies in the Technology sector have received a lot of coverage today as analysts weigh in on Garmin (GRMN – Research Report), Sapiens (SPN... Companies in the Technology sect...The P1405 engine code indicates a faulty differential pressure feedback sensor on the Ford Vehicle, according to Engine-Codes.com. This sensor monitors the exhaust gas recirculatio...Be the first to review “Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 1881 PID: SID 324 SPN: 3251 FMI: 4 Aftertreatment Diesel Particulate Filter Differential Pressure Sensor Circuit- Voltage Below Normal or … ….

I have a 2012 Freightliner M2 with Cummins engine ISB 6.7, the diagnosis code SPN 3251 After treatment 1 DPF different ial Pressure | FMI=0 - Data Valid But Above Normal Operational Range- Most Severe … read moreSevere Level. The EGR differential pressure sensor has detected lwo EGR gas flow or the EGR differential pressure reading is not valid for engine operating conditions. – First occurrence 17294:16:13; Last occurrence 20185:45:14 1899 N/A 1 Inactive 15.0L ISX2 Aftertreatment 1 Fuel Pressure Sensor - Voltage Below Normal, or Shorted to Low …Decision. A: Yes repair and retest for the fault. B: No and high DPFDP is suspected due to differential Inspect the DPFDP tubes and hoses for plugging, 1 pressure spikes proceed …A pressure mark is a sign of physical damage to the inside of an LCD screen. It is related to, but not always synonymous with, the problem of dead or stuck pixels. Usually it is no...Be the first to review “Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 1921 PID: SID 324 SPN: 3251 FMI: 16 Aftertreatment Diesel Particulate Filter Differential Pressure- Data Valid But Above Normal Operating Range- Moderately Severe Level” Cancel replyAftertreatment Resource Center SRT's. DPF R&R Code Model Engine Qualifier 1 Qualifier 2. A12-4930 7000 |MAXXFORCE DT/9/10| Horizontal Mount Under Cab N/A ... 1200 575 Sensor, DPF differential pressure. IK1201159 ­SPN 3251 FMI 2 & 21 DPFDP above or below desired level diagnostics Page 2 of 3Cleaning services are always in demand and there are many different segments in the industry, here is how to start a pressure washing business. If you buy something through our lin...The DPF differential pressure sensor is usually mounted in the engine compartment to protect it from heat. The sensor is connected to the engine control unit (ECU) by an electrical connector and connected to the DPF via two silicon hoses. One hose connects before (upstream) the DPF, the other connects after (downstream) the filter. Spn 3251 aftertreatment 1 dpf differential pressure, I have a 2012 Freightliner M2 with Cummins engine ISB 6.7, the diagnosis code SPN 3251 After treatment 1 DPF different ial Pressure | FMI=0 - Data Valid But Above Normal Operational Range- Most Severe … read more, Only it wouldn’t let us. It was too blocked. We chose to drive the car at a steady speed to see if the DPF would start to unblock. We started to see the pressure reduce and performance was starting to return. DPF Differential Pressure reducing but still much to high to enable a Forced Regen. However the ECU still wouldn’t let us do a forced ..., File: 193-t06-2639 Page 1 of 7 ISB6.7 CM2350 B101 Fault Code: 2639 | SPN: 3251 | FMI: 15 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level 1 Restricted intake air filter 2 Aftertreatment DPF differential pressure sensor tubes plugged, Choosing the best pressure washer for your desired application may be daunting. Going through the technical specifications sheet of each machine may seem Expert Advice On Improving..., The term “differential pressure” refers to fluid force per unit, measured in pounds per square inch (PSI) or a similar unit subtracted from a higher level of force per unit. This c..., The function identifies and indicates malfunction of the aftertreatment diesel particulate filter (DPF) by analyzing the pressure drop over the aftertreatment All Categories All Products, 4. Excessive Diesel Exhaust Fluid (DEF) deposits in the aftertreatment decomposition tube. 5. Plugged aftertreatment outlet pressure sensor ports could cause this fault code if pressure is held in the port after the engine is turned OFF. 6. Frozen, plugged, or restricted aftertreatment DPF differential pressure sensor tubes. 7., Apr 29, 2020 · On your issue, what you will need to do is rev the engine to wide open and monitor the dpf diff pressure. If it goes higher than 1.8-2.0 then you need to drop and clean the dpf. Then do a snap test. This is when an ex is opened up between the dpf and turbo outlet you snap the throttle and hold it down to see if the smoke clears up. , Apr 29, 2020 · On your issue, what you will need to do is rev the engine to wide open and monitor the dpf diff pressure. If it goes higher than 1.8-2.0 then you need to drop and clean the dpf. Then do a snap test. This is when an ex is opened up between the dpf and turbo outlet you snap the throttle and hold it down to see if the smoke clears up. , 1) Ignition key in ON position. Observable symptoms 1) Regeneration not possible. Probable cause 1) Connector 2) Open circuit, Signal wire 3) Open circuit, Supply wire 4) Short circuit to ground, Signal wire 5) Wiring harness 6) Aftertreatment DPF Differential Pressure Sensor 7) Aftertreatment Control Module (ACM), The soot load in the aftertreatment DPF is estimated using the aftertreatment differential pressure sensor and the calculated soot output of the engine. This fault code can be triggered if the application is not operating at a duty cycle high enough to actively regenerate the aftertreatment DPF. This fault code indicates that the exhaust ..., Dec 30, 2020 · Here is the link to the PDI tuner I have installed on my truck: https://www.amazon.com/dp/B087V9XWB7/?tag=ryannsophia-20Welcome to our channel! In today's vi... , Go to step 8. If the DOC inlet pressure starts above 8 kPa (EPA10, 1.16 psi) and stays high, the DOC is considered plugged. Go to step 9. The parked regen has reduced the DOC inlet pressure by reducing the soot accumulated in the DPF. Verify the fault code is gone and fill out the "ATD Checklist"., B: No and high DPFDP is suspected due to differential pressure spikes proceed to step 2. C: No and low DPFDP is suspected due to rapid drops in differential pressure proceed to step 3. StepAction Decision 2 Do a DPF reset in Service Maxx (See figure 1) ­­>parameters­­>CDPF_reset­­> yes­­ >program engine cycle the key off, then hold , 4. Excessive Diesel Exhaust Fluid (DEF) deposits in the aftertreatment decomposition tube. 5. Plugged aftertreatment outlet pressure sensor ports could cause this fault code if pressure is held in the port after the engine is turned OFF. 6. Frozen, plugged, or restricted aftertreatment DPF differential pressure sensor tubes. 7., 1) Aftertreatment DPF differential pressure sensor failure 2) OEM harness 3) ECM calibration. ... (2010-12) Fault Code: 5715 PID: SPN: 3251 FMI: 10 Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor- Abnormal Rate of Change” Cancel reply. Your email address will not be published. Required fields are marked * Your rating * ..., , The DPF differential pressure sensor is usually mounted in the engine compartment to protect it from heat. The sensor is connected to the engine control unit (ECU) by an electrical connector and connected to the DPF via two silicon hoses. One hose connects before (upstream) the DPF, the other connects after (downstream) the filter., Page 71 DIAGNOSTIC MANUAL 1. Downstream Injection (DSI) unit Figure 14 DSI Unit (MaxxForce® DT, 9 and 10 Engines) Downstream Injection (DSI) Unit The DSI unit is connected to the clean side of the low-pressure fuel system, and will provide a metered amount of fuel to the Aftertreatment Fuel Injector (AFI). Page 72 DIAGNOSTIC …, The ECM detects that the aftertreatment diesel particulate filter differential pressure signal voltage is greater than 4.75-VDC for more than 1 second. Action Taken When the Fault Code is Active -The ECM illuminates the malfunction indicator lamp (MIL) immediately when the diagnostic runs and fails., Go to step 8. If the DOC inlet pressure starts above 8 kPa (EPA10, 1.16 psi) and stays high, the DOC is considered plugged. Go to step 9. The parked regen has reduced the DOC inlet pressure by reducing the soot accumulated in the DPF. Verify the fault code is gone and fill out the "ATD Checklist"., 1) Aftertreatment DPF differential pressure sensor failure 2) OEM harness 3) ECM calibration. ... (2010-12) Fault Code: 5715 PID: SPN: 3251 FMI: 10 Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor- Abnormal Rate of Change” Cancel reply. Your email address will not be published. Required fields are marked * Your rating * ..., Be the first to review “Volvo All Engines (2010 Emissions) Fault Code: SPN 5319 FMI 31 PID: Aftertreatment 1 DPF Incomplete Regeneration” Cancel reply Your email address will not be published. Required fields are marked *, Title: Diagnostics for SPN 3251 FMI 21 DPFDP excessively LOW ... Perform the Aftertreatment Snap Throttle Test detailed in IK0700032. Did the aftertreatment pass …, MX13 spn 3251 fmi 16. I take care of a peterbilt with a mx13, it keeps throwing code 3251/16 for dpf differential pressure data valid but above normal range. Previously, I found the doc I let temp sensor was unscrewed and just resting in its hole. I figured that would cause a pressure difference, so I put that back in and regened it, code went ..., Cummins ISX15 CM2250 (2010-12) Fault Code: 5715 PID: SPN: 3251 FMI: 10 Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor- Abnormal Rate of Change Circuit Description The engine control module (ECM) provides a 5 volt supply to the aftertreatment diesel particulate filter differential pressure sensor on the sensor supply ... , Some people have low blood pressure (hypotension). It is only a problem if it causes dizziness, fainting, or shock. Learn about what can cause it. You've probably heard that high b..., Entrepreneurship is a mindset, and nonprofit founders need to join the club. Are you an entrepreneur if you launch a nonprofit? When I ask my peers to give me the most notable exam..., The soot load in the aftertreatment DPF is estimated using the aftertreatment differential pressure sensor and the calculated soot output of the engine. This fault code can be triggered if the application is not operating at a duty cycle high enough to actively regenerate the aftertreatment DPF. This fault code indicates that the exhaust ..., Fault Code: 1922 | SPN: 3251 | FMI: 0 Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level ... • If the aftertreatment DPF differential pressure sensor tubes do not have a continuous downward slope away from the sensor ports, then an incorrect sensor orientation has ..., The ECM detects that the aftertreatment diesel particulate filter differential pressure signal voltage is less than 0.25-VDC for more than 1 second. Action Taken When the Fault Code is Active -The ECM illuminates the malfunction indicator lamp (MIL) immediately when the diagnostic runs and fails., SPN 3251 (ACM) (EPA10) and (GHG14) 1 01 06-15. Additions, Revisions, or Updates. 2 SPN 3251/FMI 0 – GHG14. 0 – GHG14. Diesel Particulate Filter Pressure Out of Range Very …, May 7, 2020 · Aftertreatment DPF differential pressure sensor signal voltage. Verify the aftertreatment DPF differential pressure sensor signal voltage at keyswitch ON, engine OFF. At ambient temperature 25°C [77°F] and below, the reading should be 0.69 +/- 0.1-VDC. At ambient temperature 26°C [78°F] and above, the reading should be 0.69+/- 0.06-VDC.