Conditions Which Generate This Code:
The Engine Control Module (ECM) detects the following conditions:
• The ECM detects a low current condition (open circuit) for one second while the ECM is attempting to energize the solenoids for cylinder 1, cylinder 2, cylinder 5, and cylinder 6.
• The engine retarder switch is in the Medium or High position.
The ECM will log the diagnostic code and the ECM will trigger a snapshot. The check engine lamp will
illuminate while this diagnostic code is active.
Possible Performance Effect:
The engine retarder may not activate.
Perform the following diagnostic procedure:
“Retarder (Compression Brake) Solenoid Circuit – Test”
• OK – STOP.