Error code
OBD2 P0637
OBD2P0637
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Power Steering Control Circuit High.
Severity
moderateCan drive but may experience difficulty with steering, especially at low speeds.
Summary
P0637 indicates a high voltage issue in the power steering control circuit, which is related to the power steering system.
Common Causes
- Wiring short to positive
- Power steering pressure (PSP) switch failure
- ECM malfunction
Fixes
FAQ
What should I do if my car has the P0637 code?
Check for any wiring issues or faulty PSP switch. Consult a professional mechanic to diagnose and repair.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0600Serial Communication Link
- P0601Internal Control Module Memory Check Sum Error
- P0602Control Module Programming Error
- P0603Internal Control Module Keep Alive Memory (KAM) Error
- P0604Internal Control Module Random Access Memory (RAM) Error
- P0605Internal Control Module Read Only Memory (ROM) Error
- P0606ECM/PCM Processor
- P0607Control Module Performance
- P0608Control Module VSS Output 'A'
- P0609Control Module VSS Output 'B'
- P0610Control Module Vehicle Options Error
- P0611Fuel Injector Control Module Performance