P0700
PowertrainTransmissionmoderate severityTransmission Control System (MIL Request)
What P0700 Means
The Transmission Control Module (TCM) has requested the PCM to turn on the Check Engine Light due to a transmission fault. There will be additional transmission-specific codes stored.
Symptoms
- Check Engine Light
- Possible shift problems
- May be in limp mode
Common Causes
- Various transmission issues - check for additional codes
- TCM detected a fault
- Wiring issue between TCM and PCM
Diagnostic Steps
- Read ALL codes including transmission-specific codes
- Check transmission fluid level and condition
- Address other transmission codes first
Where to start: This is an informational code. Look for other P07xx and P08xx codes that explain the actual problem.
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