Camera Signal Circuit Low
The vehicle's camera system is detecting a low signal voltage.
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What it means (plain English)
The camera system uses a voltage signal to determine if it's working properly. If the signal drops too low, it indicates a problem with the camera or the wiring around it.
What the computer is actually seeing
The control module expects a camera signal voltage between 2.5V and 4.5V. If it sees a voltage below this range (e.g., 0-2V), it triggers the fault code B263E.
What a healthy reading looks like
The expected signal voltage from the camera circuit should be between 2.5V and 4.5V when operational. Below 2.5V indicates a low signal condition.
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 camera wiring harness and connectors for visible damage or corrosion. Are there any issues? If yes, repair or replace the damaged components.
- 22. Check the voltage at the camera connector with the key on. Is it between 2.5V and 4.5V? If no, suspect the wiring or control module.
- 33. If the voltage is good, swap the camera module with a known good unit. Does the fault code clear? If yes, replace the camera module.
Common causes
- Faulty camera module
- Damaged wiring or connectors
- Corrosion in the connectors
- Failed control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable, but the rearview camera may not function.
Will the code come back after clearing it?
If the underlying issue isn't resolved, yes, the code will likely return.
Does this code frequently pair with other codes?
Yes, it often shows up with issues related to wiring or related modules.
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