Front End Module Sensor Supply Voltage Range
The Front End Module has detected a voltage supply issue.
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What it means (plain English)
The Front End Module, which controls various sensors, is not getting the proper voltage it needs. This usually means there's a wiring issue or a bad sensor not getting enough power.
What the computer is actually seeing
The module expects to see a supply voltage between 9V and 16V but is detecting readings outside of this range.
What a healthy reading looks like
9V-16V on the supply pin of the Front End Module.
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. Check the wiring and connectors leading to the Front End Module for damage or corrosion.
- 22. Measure the voltage at the supply pin of the Front End Module. Check if it's between 9V and 16V.
- 3 - If yes, move to step 4.
- 4 - If no, proceed to step 3.
- 53. Inspect for short circuits to ground or open circuits in the wiring. Repair as necessary.
- 64. If voltage is within range, consider testing or replacing the Front End Module.
Common causes
- Damaged wiring or connectors to the Front End Module.
- Bad Front End Module causing incorrect voltage readings.
- Corroded connectors leading to voltage drops.
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive until you fix the problem, as it may affect vehicle safety features.
Will this code come back after clearing it?
If the underlying issue isn't fixed, the code will likely return shortly after clearing.
Why does this code appear with other codes like B2211?
Codes like B2211 indicate similar supply voltage issues, which are often related.
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