Applicable Systems
OBD-II
Symptoms
The transmission control system has requested the malfunction indicator lamp. A transmission-related fault is present.
Possible Causes
- Transmission control module detected a fault in the transmission system
- Communication error between TCM and PCM
- Transmission sensor or solenoid fault triggering MIL
Troubleshooting Steps
- Step 1: Scan for additional transmission DTCs to identify the specific fault
Specific fault code identified - Step 2: Check TCM to PCM communication link
Communication link intact - Step 3: Repair the underlying transmission fault indicated by additional codes
Root cause resolved
How to Reset
To reset: Clear the DTC after resolving the underlying transmission fault.
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Source: SAE J2012 OBD-II Diagnostic Trouble Codes, SAE International
Category: OBD-II
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