Code 4-1-6: Charge Pressure Reduction From Transmission Control Module
- Using Volvo Scan Tool (998-8686 ), check status message. If fault is permanent, go to next step. If fault is intermittent, go to step 3).
- If fault is permanent, check wiring between ECM terminal B42 and Transmission Control Module (TCM) terminal B1 for a short circuit to ground. Repair as necessary.
- If fault is intermittent, check wiring between ECM terminal B42 and Transmission Control Module (TCM) terminal B1 for an intermittent short circuit to ground. Repair as necessary.