Pedal Correlation PDS2 and HPDS
Your engine's computer detected a mismatch between two pedal position sensors—like having two speedometers showing different speeds. This disagreement tells the ECU the throttle control system isn't trustworthy.
The ECM compares voltage signals from the Primary Pedal Position Sensor (PDS2) and the Heated Pedal Position Sensor (HPDS) to verify driver intent. If the correlation between these two sensors exceeds a programmed threshold, the ECU flags a fault to prevent unintended acceleration or loss of control.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor voltage correlation | PDS2 and HPDS within 10% of each other | Voltage difference exceeds 10% for more than 1 second |
| Pedal position change rate | Synchronized rise/fall within 50ms | Asynchronous movement or stalling detected |
Code P1262 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P1262 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.