Power Steering Control Module Fault
The power steering control module has detected an issue.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The power steering control module monitors the steering system's performance and lets the system know if there's a problem. If it sees something unusual, it sets a trouble code.
What the computer is actually seeing
The power steering control module sees faults in sensor inputs, communication issues with other modules, or internal errors within its functionality.
What a healthy reading looks like
Steering assist parameters should show normal operation within expected ranges (0-5 volts for sensors).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors to the power steering control module for damage or corrosion. Repair as needed. DECISION: Do you find any issues? YES - fix the wiring. NO - proceed to step 2.
- 22. Check the power steering fluid level; it should be within the acceptable range. DECISION: Is the fluid level correct? NO - add fluid, clear the code, and retest. YES - proceed to step 3.
- 33. Verify the operation of the power steering system visually while turning the wheel; listen for unusual noises. DECISION: Is the steering functional? NO - inspect and test the power steering pump. YES - proceed to step 4.
- 44. Test the power steering control module with a scan tool to check for other related codes or live data. DECISION: Are there additional trouble codes? YES - address those codes. NO - replace the power steering control module.
Common causes
- Wiring issues to the power steering control module
- Faulty power steering control module
- Low power steering fluid level
- Corroded connectors
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive safely with this code?
It's best to fix soon. You may experience heavy steering, which can be unsafe.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes.
Why does this code pair with C0850 or C0860?
Those codes indicate related faults in the power steering system or communication issues.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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