Brake Pedal Position Sensor Circuit Range/Performance Problem
The brake pedal position sensor signal is out of the expected range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The brake pedal position sensor tells the computer how far down the brake pedal is pressed. If it sees a weird voltage or resistance level, it thinks something is wrong, usually due to a faulty sensor or wiring issue.
What the computer is actually seeing
The ABS module looks for a voltage between 0.5V to 4.5V from the brake pedal position sensor when the brake is pressed. If it sees something outside of this range, it triggers the code.
What a healthy reading looks like
Sensor voltage should be between 0.5V (brake not pressed) and 4.5V (brake fully pressed) with a smooth change in voltage during pedal travel.
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 wiring to the brake pedal position sensor for damage or loose connections. Decision: If damaged, repair wiring; if okay, proceed to step 2.
- 22. Measure voltage at the brake pedal position sensor. It should be between 0.5V and 4.5V when the pedal is pressed and released. Decision: If out of range, replace sensor; if within range, proceed to step 3.
- 33. Inspect the ABS module for any alerts or updates. Sometimes, a software update can resolve sensor communication issues. Decision: If updates available, reprogram module; if no updates, test the module's functionality.
Common causes
- Faulty brake pedal position sensor
- Wiring issues (shorts, opens, or corrosion)
- Connector problems (loose, damaged, or corroded connections)
- Software problem in ABS module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best not to drive until this is fixed, as brake performance may be compromised.
Will this code come back after being cleared?
It can return if the underlying issue isn’t resolved, such as a bad sensor or wiring.
Why does this code sometimes pair with other codes?
Other codes may indicate additional issues with related systems, like stability control or traction control, often sharing the same sensor inputs.
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