C0181
Throttle Reduction Motor Circuit Malfunction
C0181 is an OBD-II diagnostic trouble code meaning: Throttle Reduction Motor Circuit Malfunction. Common causes: open or shorted wiring harness, throttle reduction motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Unstable idle
- Power dips during acceleration
- Check Engine light comes on
- Difficulty starting the engine
Causes
- Open or shorted wiring harness
- Throttle reduction motor malfunction
- Problems with the ECU
- Oxidized or damaged contacts
How to Fix
- Check the wiring harness for opens and shorts
- Test the throttle reduction motor
- Check contacts and connections
- Replacing the reduction motor or repairing the wiring harness
- Resetting the error and re-diagnosis
Related codes
Error C0181 by Vehicle Brand
FAQ
What does the C0181 code mean?
C0181 is an OBD-II diagnostic trouble code that indicates: Throttle Reduction Motor Circuit Malfunction
What causes a C0181 error code?
The most common causes of C0181 include: Open or shorted wiring harness; Throttle reduction motor malfunction; Problems with the ECU; Oxidized or damaged contacts.
How do I fix a C0181 diagnostic trouble code?
To fix C0181: Check the wiring harness for opens and shorts. Test the throttle reduction motor. Check contacts and connections. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0181?
Limited driving only, diagnose soon
How much does it cost to fix C0181?
The estimated repair cost for C0181 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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