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Home >> Volvo >> 1994 >> 850 Turbo, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Turbo >> Diagnostic Testing >> MOTRONIC 4.3 Control System >> Code 4-1-6 (Charge Pressure Reduction From Transmission Control Module)

Code 4-1-6 (Charge Pressure Reduction From Transmission Control Module)

  1. 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).
  2. 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.
  3. 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.
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