Error code
OBD2 P0966
OBD2P0966
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Pressure Control Solenoid 'B' Control Circuit Low.
Severity
moderateYou can still drive the vehicle, but it won't be comfortable.
Summary
P0966 indicates a low control circuit issue with Pressure Control Solenoid 'B' in the transmission.
Symptoms
- Harsh shifting or banging into gear
- Limited performance
Common Causes
- Wiring damage or poor connection between TCM and transmission
- Corrosion in electrical connectors
- Faulty pressure control solenoid valve
Diagnosis
- Inspect wire harness for damage or corrosion
- Check resistance across terminals in TCM connector and transmission connector
- Verify proper connection of connectors
Fixes
- Repair damaged wiring or corroded connectors
- Replace faulty pressure control solenoid valve if necessary
FAQ
Can I drive with P0966?
Yes, but driving will be uncomfortable due to harsh shifting or limited performance.
What should I check first for P0966?
Inspect the wire harness and connectors between TCM and transmission for damage or corrosion.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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