Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-520B

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that there is no signal from the air conditioning (A/C) pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed while the engine is running and while air conditioning (A/C) control is active.

Substitute value
Predefined value for the air conditioning pressure.

Possible source
- Open-circuit in the signal cable
- Damaged A/C pressure sensor.

Fault symptom[s]
- The air conditioning (A/C) system does not operate.