C1304
EPS Control System Malfunction
C1304 is an OBD-II diagnostic trouble code meaning: EPS Control System Malfunction. Common causes: low voltage on-board network, steering torque sensor malfunction. Estimated repair cost: $56–389.
Symptoms
- Increased effort when turning the steering wheel
- The EPS indicator on the instrument panel is on
- Intermittent operation of the power steering
- Rattling or vibration in the steering wheel
Causes
- Low voltage on-board network
- Steering torque sensor malfunction
- EPS motor problems
- EPS control unit malfunction
- Damage to the system wiring harness
- Bad contacts in connectors
- Problems with the car speed sensor
How to Fix
- On-board voltage diagnostics
- Checking the contacts and integrity of the EPS wiring harness
- Scanning fault codes in the EPS system
- Checking the steering torque sensor
- Steering motor diagnostics
- Check and, if necessary, replace the EPS control unit
Related codes
FAQ
What does the C1304 code mean?
C1304 is an OBD-II diagnostic trouble code that indicates: EPS Control System Malfunction
What causes a C1304 error code?
The most common causes of C1304 include: Low voltage on-board network; Steering torque sensor malfunction; EPS motor problems; EPS control unit malfunction.
How do I fix a C1304 diagnostic trouble code?
To fix C1304: On-board voltage diagnostics. Checking the contacts and integrity of the EPS wiring harness. Scanning fault codes in the EPS system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1304?
Limited driving only, diagnose soon
How much does it cost to fix C1304?
The estimated repair cost for C1304 is $56–389. Actual cost depends on your vehicle, location, and labor rates.
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