JCB Fault Code
Free · no signupP0101
Engine Stumble / High Fuel Use.
System
Air Intake (MAF)
Symptom
Engine Stumble / High Fuel Use.
Diagnosis & fix steps
LOGIC: Mass Air Flow (MAF) Sensor range error.
ACTION: Inspect the intake piping for leaks between the filter and turbo. Clean the MAF sensor element with specialized electronic cleaner.
Red Seal field insights
Specs: MAF signal should change linearly with RPM. RED SEAL FIX: A "dust-out" (leaking air filter) will coat this sensor in grit, "insulating" it from the air and causing the ECM to over-fuel.
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