P0226

Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance

Car Fault Codes Fuel & air

Can you still drive? With care, short trips only

Who can fix it? Needs a workshop

Typical repair time 30 minutes – 2 hours

Typical cost SAR 100 to 2,500

What it means

This code means the C signal in the throttle or accelerator pedal sensor system is present electrically but does not agree with the other signals or with the expected position. The computer treats it as unreliable and usually limits engine power.

Symptoms4

Check engine light on with reduced power.
Jerky acceleration or acceleration that does not match pedal input.
Limp mode at certain pedal positions.
Occasionally unstable idle.

Possible causes5

Worn internal sensor track so the C signal drifts at certain positions.
Extra resistance in the connector or wiring from corrosion.
Sticking or dirt in the throttle body or pedal mechanism.
Failed pedal sensor or throttle body assembly.
Incorrect replacement part or a skipped relearn procedure.

How to diagnose5

Use the service information to identify which sensor carries the C signal.
Compare the C signal with the other signals on a scan tool through the full range of travel and confirm their relationship is correct.
Graph the signal with an oscilloscope to catch any jump or momentary dropout.
Measure the voltage drop on the ground and reference circuits and inspect the connector for corrosion.
Check that the pedal and throttle move freely without sticking.

How to fix5

Clean the connector and repair wiring with extra resistance.
Remove anything obstructing the pedal or clean the throttle body, then perform the relearn.
Replace the pedal sensor if its signal is not smooth.
Replace the throttle body assembly if its built-in sensor is proven worn.
Clear the codes, then road test and confirm the code does not return.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

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

A connector repair or cleaning may be enough at low cost; the cost rises for a pedal sensor and reaches the upper end for an electronic throttle body assembly.

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

How does the computer know the signal is not plausible?

It compares the sensor's different signals with each other; they are designed to change in a fixed relationship, and any departure from it sets this code.

Does this code mean a shorted or broken wire?

Usually not. Low and high voltage codes cover shorts and opens, while this code points more to a worn sensor or extra resistance.

Can I drive with this code?

Only a short distance and with care, because the computer may limit power suddenly.

This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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