C1837
Battery Heater Circuit Failure
C1837 is an OBD-II diagnostic trouble code meaning: Battery Heater Circuit Failure. Common causes: open or short circuit in wiring harness, battery heating element malfunction. Estimated repair cost: $56–167.
Symptoms
- Reduced battery efficiency in cold weather
- Check Engine Light Illuminates
- Possible problems with starting in cold weather
Causes
- Open or short circuit in wiring harness
- Battery heating element malfunction
- Problems with the heating control relay
- Control unit malfunction
How to Fix
- Check the integrity of the heating circuit wiring harness
- Test the battery heating element
- Check the operation of the control relay
- Scan the control unit for additional errors
Related codes
FAQ
What does the C1837 code mean?
C1837 is an OBD-II diagnostic trouble code that indicates: Battery Heater Circuit Failure
What causes a C1837 error code?
The most common causes of C1837 include: Open or short circuit in wiring harness; Battery heating element malfunction; Problems with the heating control relay; Control unit malfunction.
How do I fix a C1837 diagnostic trouble code?
To fix C1837: Check the integrity of the heating circuit wiring harness. Test the battery heating element. Check the operation of the control relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1837?
Limited driving only, diagnose soon
How much does it cost to fix C1837?
The estimated repair cost for C1837 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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