Diesel Data: Automotive Repair

Fault Conditions




P1662

Charge Air Control Valve Circuit. Open/Short to Ground.







Fault symptoms
- Engine weak.
- CHECK ENGINE.

On-Board Diagnostics

Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:
- Engine running. Main relay voltage exceeding 10 V. Output not active.