B210D
Starter Relay ON
B210D is an OBD-II diagnostic trouble code meaning: Starter Relay ON. Common causes: faulty starter relay, open or short circuit in wiring harness (harness). Estimated repair cost: $33–167.
Symptoms
- Engine won't start
- Relay clicks without starter turning on
- No sounds when turning the key
- Immobilizer lamp flashing
Causes
- Faulty starter relay
- Open or short circuit in wiring harness (harness)
- Poor contact connection at relay terminals
- Body Control Module (BCM) Malfunction
- Problems with the immobilizer or ignition key
How to Fix
- Carry out diagnostics with a scanner to check the status of the immobilizer and modules
- Check the physical condition and contacts of the starter relay
- Diagnose the relay control circuit for opens and short circuits
- If necessary, replace the starter relay
- Reflash or replace the BCM if it is faulty
Related codes
FAQ
What does the B210D code mean?
B210D is an OBD-II diagnostic trouble code that indicates: Starter Relay ON
What causes a B210D error code?
The most common causes of B210D include: Faulty starter relay; Open or short circuit in wiring harness (harness); Poor contact connection at relay terminals; Body Control Module (BCM) Malfunction.
How do I fix a B210D diagnostic trouble code?
To fix B210D: Carry out diagnostics with a scanner to check the status of the immobilizer and modules. Check the physical condition and contacts of the starter relay. Diagnose the relay control circuit for opens and short circuits. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B210D?
Yes, but get it checked soon
How much does it cost to fix B210D?
The estimated repair cost for B210D is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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