Steering Control Motor Circuit
Problem with the steering control motor circuit.
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 steering control motor is having trouble communicating or working properly due to an electrical issue.
What the computer is actually seeing
The control module is reading voltage or resistance values out of expected range from the steering control motor circuit, usually indicating an open or short in the wiring or the motor itself.
What a healthy reading looks like
Expected voltage should be around 12-14 volts when the system is active, and resistance should be minimal (under 5 ohms) when checking motor terminals.
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. Inspect the wiring and connectors of the steering control motor for any visible damage, shorts, or corrosion.
- 22. Check the battery voltage at the steering control motor connector with the key on. You should see 12-14 volts. If not, trace back to find the break in power.
- 33. With the connector still unplugged, check the resistance of the motor terminals. You should get a reading under 5 ohms, indicating good motor function.
- 44. If all wiring and connectors are in good shape and voltage/resistance tests are as expected, sheck for faults in the steering control motor itself. Replace if needed.
Common causes
- Damaged wiring or connectors in the steering motor circuit
- Faulty steering control motor
- Issues with the steering angle sensor affecting operation
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive my vehicle with this code?
It's drivable, but steering assistance may be compromised, so fix it soon.
Will this code come back after clearing?
If the underlying issue isn't fixed, yes, the code will likely return.
Why do I pair this code with C0740?
C0740 and C0742 are both related to steering motor circuits, indicating similar or interconnected issues.
Working a real vehicle right now?
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