Diagnostic trouble code (DTC) information

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.