CEM-3A04

Condition

Diagnostic trouble code (DTC) CEM-3A04 is stored if the central electronic module (CEM) registers that the signal is too high.

Substitute value

- None.

Possible source

- Short-circuit to positive supply.
- Defective relay.

Fault symptom[s]

- Noise from the fuel pump (FP).
- Noise from the engine compartment.