Rear Camera Circuit Short to Ground
There’s a short circuit detected in the rear camera wiring.
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What it means (plain English)
The rear camera isn't working because the wiring is shorted to ground, which means that the power is leaking to the frame instead of going to the camera, preventing it from operating.
What the computer is actually seeing
The vehicle's computer sees a voltage drop or no voltage from the rear camera circuit due to the short to ground.
What a healthy reading looks like
The rear camera circuit should show around 5V to 12V when active, but will show 0V or near 0V if shorted to ground.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring harness and connectors leading to the rear camera for visible damage or corrosion. If damaged, repair or replace as necessary.
- 22. With the rear camera connected, use a multimeter to check the voltage supply at the rear camera connector; it should be between 5V and 12V. If it’s 0V, proceed to the next step.
- 33. Disconnect the rear camera and check for continuity between the positive wire and ground; any continuity indicates a short. If a short is found, inspect the wiring harness for internal faults.
- 44. If no short is found and voltage is still 0V, check the related fuse for the rear camera circuit. Replace it if blown and retest the circuit.
- 55. If everything checks out and the code persists, consider replacing the rear camera module.
Common causes
- Damaged wiring in the rear camera circuit
- Corroded connectors
- Faulty rear camera module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's advisable to avoid driving the vehicle until this is fixed since the rear view camera isn't operational, which can impact visibility.
Will this code come back after clearing?
It can come back if the underlying issue, like a short in the wiring or a faulty camera, isn't resolved.
Why is this code paired with other codes?
Codes like B2420 or B2412 may indicate related issues, like connectivity problems or faults within the camera system.
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