Accelerator Pedal Position Sensor 2 Above Normal
This code indicates that the second accelerator pedal position sensor is reading higher than expected.
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 accelerator pedal has two sensors that tell the engine how much you're pressing down. If the second sensor sends a signal that’s higher than what the first sensor sees when you press the pedal, this code pops up.
What the computer is actually seeing
The ECM expects a range of signals from the pedals, typically measuring between 0.5V at idle to around 4.5V at full throttle. If the second sensor consistently shows over 1.0V higher than the first under the same conditions, it will trigger this code.
What a healthy reading looks like
First sensor should read 0.5V (idle) to 4.5V (full throttle), second sensor should be within 1.0V of the first under the same throttle position.
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 connector to the accelerator pedal position sensor 2 for corrosion or loose connections. If damaged, repair or replace as needed.
- 22. Measure the voltage output of the accelerator pedal position sensor 1 and sensor 2 at idle and full throttle positions. Ensure they are within 1.0V of each other. If sensor 2 is higher, replace sensor 2.
- 33. Inspect the accelerator pedal mechanism for any binding or physical obstruction. Clear any found issues.
Common causes
- Faulty accelerator pedal position sensor 2
- Wiring or connector issues between the sensor and ECM
- Mechanical binding or damage to the accelerator pedal mechanism
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but not recommended for long distances as it may affect engine response.
Will the code return after clearing?
It can return if the underlying issue isn't fixed.
Why does this code pair with SPN 3410?
SPN 3410 is for accelerator pedal position sensor 1; both sensors must work correctly together.
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