Diagnostic Trouble Code (DTC) Information

ECM-402A FUEL TANK PRESSURE SENSOR
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION




Condition
Fuel tank pressure usually changes when the canister purge (CP) valve is operating. Diagnostic trouble code (DTC) ECM-402A is stored in the engine control module (ECM) if the fuel tank pressure is constant when the canister purge (CP) valve is constant.

Condition
- The engine control module (ECM) assumes a fuel tank pressure of 0 hPa

Possible source

Faulty signal:
- defective hoses
- defective manifold absolute pressure (MAP) sensor
- major leak.

Condition
None.