C0538
Motor Control B Circuit Low
C0538 is an OBD-II diagnostic trouble code meaning: Motor Control B Circuit Low. Common causes: open or short circuit in wiring harness, malfunction of solenoid or squib. Estimated repair cost: $56–167.
Symptoms
- The passive safety system fault indicator is on
- Problems with the operation of belt pretensioners
- Incorrect operation of airbags
Causes
- Open or short circuit in wiring harness
- Malfunction of solenoid or squib
- Damage to the passive safety system controller
- Poor contact in connectors
How to Fix
- Check the wiring harness for damage
- Check resistance and voltage in control circuit
- Inspect connectors and contacts for oxidation or damage
- Replace faulty components (solenoid, squib, controller)
Related codes
Error C0538 by Vehicle Brand
FAQ
What does the C0538 code mean?
C0538 is an OBD-II diagnostic trouble code that indicates: Motor Control B Circuit Low
What causes a C0538 error code?
The most common causes of C0538 include: Open or short circuit in wiring harness; Malfunction of solenoid or squib; Damage to the passive safety system controller; Poor contact in connectors.
How do I fix a C0538 diagnostic trouble code?
To fix C0538: Check the wiring harness for damage. Check resistance and voltage in control circuit. Inspect connectors and contacts for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0538?
Do not drive — repair immediately
How much does it cost to fix C0538?
The estimated repair cost for C0538 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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