P02E1
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1st Gear
Joined: Jan 2026
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P02E1
I have a 2017 F-250 with the 6.7 that keeps popping the P02E1 code(Diesel Intake Air Flow A Control Performance). Ford Dealership has put 7 throttle bodies and a PCM on it. I found the CAC hose had cracking init and replaced that with no luck. I let it manually regenerate but is sitting at 50% soot load with the CEL. Throttle body is clean and no apparent boost leaks. Pinned out the throttle body and all power, ground and signal voltages are good. OHmed the harness back to the PCM and all wires had good 0.3 ohms. Did not load test. Have any of y'all ran into this issue?
Last edited by chrispowerstrok; Jan 11, 2026 at 07:51 PM. Reason: Fault code description
Cargo Master
Joined: Feb 2017
Posts: 2,424
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From: Wisconsin
Have you cleaned or replaced the MAS?
The Ford P02E1 code signifies a Diesel Intake Air Flow Control Performance issue, meaning the engine's computer detects a problem with regulating airflow, often due to a sticky or sooty throttle body, boost/intercooler hose leaks, a faulty Mass Airflow (MAF) sensor, or EGR valve problems, leading to poor power and light illumination. Common fixes involve cleaning the throttle body and MAF sensor, inspecting boost hoses for leaks, and potentially replacing the throttle body or sensors, followed by a
PCM reset
.
Common Causes
The Ford P02E1 code signifies a Diesel Intake Air Flow Control Performance issue, meaning the engine's computer detects a problem with regulating airflow, often due to a sticky or sooty throttle body, boost/intercooler hose leaks, a faulty Mass Airflow (MAF) sensor, or EGR valve problems, leading to poor power and light illumination. Common fixes involve cleaning the throttle body and MAF sensor, inspecting boost hoses for leaks, and potentially replacing the throttle body or sensors, followed by a
PCM reset
.
Common Causes
- Soot Buildup: Accumulation in the intake system, especially the throttle body, restricts airflow.
- Boost/Intercooler Leaks: Tears or cracks in rubber hoses allow unmetered air in.
- Faulty Sensors: MAF sensor or intake air temperature sensor issues.
- Throttle Body Actuator: Mechanical or electrical failure.
- EGR System: Problems with the EGR valve or its passages.
Last edited by jimzpsd; Jan 12, 2026 at 08:55 AM.
Hotshot
Joined: Jul 2013
Posts: 14,241
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Only advice I can give you is not to assume adjacent sensor are ok.
there should be multiple codes listed what are all of them
you should compare your MAF, IAT, MAP, EBP , DPFinlet numbers at different rpms to known good readings
there should be multiple codes listed what are all of them
you should compare your MAF, IAT, MAP, EBP , DPFinlet numbers at different rpms to known good readings
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