P0697
PowertrainPcm Referencehigh severitySensor Reference Voltage C Circuit/Open
What P0697 Means
The 5-volt reference circuit C used by sensors is open or reading incorrectly. This can affect multiple sensors sharing that reference.
Symptoms
- Check engine light on
- Multiple sensor codes
- Poor engine performance
Common Causes
- Short or open in reference wiring
- Shorted sensor pulling down reference
- Corroded connector
- Faulty PCM
Diagnostic Steps
- Scan for related sensor codes
- Measure the 5V reference at sensors
- Disconnect sensors one by one to find short
- Repair wiring or replace PCM if needed
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✓ Autel official store
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