B0502
Open Or Short To Ground In The RH DRL Relay Control Circuit
B0502 is an OBD-II diagnostic trouble code meaning: Open Or Short To Ground In The RH DRL Relay Control Circuit. Common causes: broken wire in the control circuit, short circuit to ground. Estimated repair cost: $22–89.
Symptoms
- Right DRL does not work
- Right DRL flashing
- The malfunction indicator on the instrument panel lights up
Causes
- Broken wire in the control circuit
- Short circuit to ground
- Faulty DRL relay
- Wiring harness damage
- Oxidation of contacts
- Control unit malfunction
How to Fix
- Check the integrity of the right DRL relay control circuit
- Measure resistance and voltage at test points
- Inspect the wiring harness for damage
- Check relay and control unit contacts
- Replace relay if necessary
- Repair damaged wires or replace the harness
Related codes
Error B0502 by Vehicle Brand
FAQ
What does the B0502 code mean?
B0502 is an OBD-II diagnostic trouble code that indicates: Open Or Short To Ground In The RH DRL Relay Control Circuit
What causes a B0502 error code?
The most common causes of B0502 include: Broken wire in the control circuit; Short circuit to ground; Faulty DRL relay; Wiring harness damage.
How do I fix a B0502 diagnostic trouble code?
To fix B0502: Check the integrity of the right DRL relay control circuit. Measure resistance and voltage at test points. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0502?
Limited driving only, diagnose soon
How much does it cost to fix B0502?
The estimated repair cost for B0502 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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