P1260
Pedal Correlation PDS2 and LPDS Low
Powertrain Speed/Idle Control Pedal Position Sensor Correlation 🟡 Moderate — Fix within a week
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What This Actually Means
In plain language — no jargon

Your gas pedal sensors aren't communicating properly with the engine computer—it's like the accelerator is sending mixed signals about how hard you're pressing. The system detects that two pedal position sensors (PDS2 and LPDS) are reading abnormally low or mismatched values.

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Symptoms You May Notice
3 known symptoms for this code
Check Engine Light illuminated
Reduced engine power or limp mode activation
Difficulty accelerating or sluggish throttle response
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECU monitors two redundant pedal position sensors (Primary Pedal Position Sensor 2 and Low Pedal Position Sensor) to verify pedal input accuracy and safety. Both sensors must report correlated voltage signals within expected ranges; if both read abnormally low or disagree significantly, the ECU triggers this fault to prevent unintended acceleration or engine damage.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
PDS2 & LPDS Voltage 0.5–4.5 V with correlation match Both sensors < 0.5 V or correlation error > threshold
Sensor Agreement Voltage difference < 0.2 V between sensors Voltage variance exceeds acceptable delta
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Pedal connector and wiring harness
Inspect and reseat the accelerator pedal electrical connectors under the dash; clean any corrosion from pins.
2
Accelerator pedal assembly
Replace the entire pedal unit if internal potentiometers are worn or damaged after confirming wiring is sound.
3
Engine Control Module (ECM) software update
Check for available firmware updates from the manufacturer that may recalibrate sensor thresholds.