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Code

P2138

Throttle

Throttle / pedal position sensor D-E correlation

The two accelerator pedal sensor signals do not agree.

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Most likely causes

Faulty pedal sensor
Wiring fault
Misaligned pedal

Symptoms you may notice

Check engine light
Limp mode
Poor response

Checks to run

Compare sensor D and E readings
Test both circuits
Inspect the pedal assembly

Tools you may need

OBD-II scanner Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Throttle

Throttle position sensor / pedal circuit malfunction

Throttle position sensor range / performance problem

Throttle position sensor B circuit malfunction

Throttle actuator control range / performance

Throttle actuator control motor circuit range / performance

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