Throttle/Pedal Position Sensor/Switch E Circuit Low

What it means

The engine computer has found that the signal from sensor E is below its normal range. On most vehicles, sensor E is the second sensor in the accelerator pedal position sensor, which the computer uses to confirm the first sensor's reading, so it enters limp mode when it fails.

Related codes: P2128P2122P2138P0651P2106

Symptoms4

• Check engine light on, sometimes with the electronic throttle warning light.
• Weak acceleration and limp mode.
• Slow accelerator response.
• Sometimes no other symptoms if the fault is intermittent.

Possible causes5

• Corroded or loose pedal sensor connector.
• Open in the sensor E signal wire or reference voltage wire.
• Signal wire shorted to ground.
• Failed sensor E inside the pedal sensor assembly.
• Reference voltage pulled down by a short in another sensor that shares the same supply.

How to diagnose5

1. Read all stored codes; a reference voltage code such as P0651 points to a shared supply fault.
2. Watch the sensor E voltage on a scan tool while pressing the pedal slowly and confirm it changes smoothly.
3. Compare sensor E with sensor D; the relationship between them should stay constant per the manufacturer specification.
4. Inspect the connector and measure the reference voltage and ground there.
5. Check signal wire continuity and confirm there is no short to ground.

How to fix5

1. Clean or repair the connector.
2. Repair the broken or shorted wire.
3. Fix the cause of low reference voltage if another sensor is responsible.
4. Replace the pedal sensor or the complete pedal assembly.
5. Clear the codes and confirm the code does not return after driving.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a connector or wiring repair, and rises when the pedal assembly with its sensor is replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions