What Does P1582 Mean?
This manufacturer-specific code indicates a disagreement between the accelerator pedal position sensors. The electronic throttle control system uses dual redundant sensors to verify driver input, and when their readings diverge beyond an acceptable threshold, this code is set. The PCM may enter a reduced power or limp-home mode to protect the drivetrain and ensure safe operation.
Safety Warning
Vehicle may enter limp-home mode with severely reduced power, potentially causing a hazard in merging or passing situations. Unpredictable throttle response is possible if the condition is intermittent.
Common Causes
35%
Faulty accelerator pedal position sensor assembly
25%
Corroded or damaged wiring/connector at the pedal sensor
20%
Intermittent open or short in APP sensor signal circuit
10%
PCM internal fault or calibration error
10%
Mechanical binding or damage to the accelerator pedal mechanism
Diagnostic Steps
1
Read freeze-frame data and note which sensor values diverged and under what conditions.
2
Using live data, monitor both APP sensor voltages simultaneously while slowly sweeping the pedal through its full range; look for dead spots, dropouts, or voltage inversions.
3
Inspect the accelerator pedal assembly connector for corrosion, bent pins, water intrusion, or loose terminals.
4
Check wiring harness between the pedal assembly and PCM for chafing, shorts to ground, or opens using a DVOM.
5
If wiring checks pass, replace the accelerator pedal position sensor assembly and retest.
6
Clear codes and perform a road test verifying both sensor signals track correctly under all throttle conditions.
Estimated Repair Cost
$150 - $450
Parts + labor, varies by vehicle and location
This manufacturer-specific code indicates a disagreement between the accelerator pedal position sensors. The electronic throttle control system uses dual redundant sensors to verify driver input, and when their readings diverge beyond an acceptable threshold, this code is set. The PCM may enter a re...
The most common cause of P1582 (Pedal Position Sensor Disagreement btwn Sensors) is: Faulty accelerator pedal position sensor assembly
Typical repair costs for P1582 range from $150 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may enter limp-home mode with severely reduced power, potentially causing a hazard in merging or passing situations. Unpredictable throttle response is possible if the condition is intermittent.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1582 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control
Difficulty
Type
Manufacturer
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