What Does P0226 Mean?
This code indicates the throttle/pedal position sensor/switch C circuit is not performing within its expected range relative to other position sensors. The ECM has detected that sensor C output does not track proportionally with sensors A and B during throttle operation. The signal may be offset, sluggish, or showing unexpected deviations.
Common Causes
40%
Worn accelerator pedal position sensor C with degraded resistive track causing signal offset relative to sensors A and B
25%
Pedal mechanism binding or sticking causing the sensor C position to lag behind the actual pedal input
20%
High-resistance connection in the sensor C circuit causing a voltage offset from the expected tracking relationship
15%
ECM calibration issue or input channel drift on the sensor C ADC circuit
Diagnostic Steps
1
Step 1: Graph sensors A, B, and C simultaneously while slowly depressing the accelerator. All three should track in a smooth, predictable relationship. Identify which sensor deviates.
2
Step 2: Inspect the accelerator pedal mechanism for binding, dirt buildup on the pivot, or a floor mat interfering with pedal travel.
3
Step 3: Check the sensor C signal wire for high-resistance connections by measuring voltage at the sensor versus at the ECM while the pedal is depressed. A difference of more than 0.1V indicates wiring resistance.
4
Step 4: Perform a pedal position sensor reset/relearn if supported by the manufacturer.
5
Step 5: Replace the accelerator pedal assembly if sensor C tracking cannot be corrected with cleaning and electrical repairs.
Estimated Repair Cost
$150 - $500
Parts + labor, varies by vehicle and location
This code indicates the throttle/pedal position sensor/switch C circuit is not performing within its expected range relative to other position sensors. The ECM has detected that sensor C output does not track proportionally with sensors A and B during throttle operation. The signal may be offset, sl...
The most common cause of P0226 (Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem) is: Worn accelerator pedal position sensor C with degraded resistive track causing signal offset relative to sensors A and B
Typical repair costs for P0226 range from $150 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Sensor C range/performance deviation reduces the ECM's confidence in throttle position accuracy, typically activating limp mode. This limits vehicle performance but prevents potentially dangerous throttle control errors.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0226 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control System
Difficulty
Type
Generic (SAE)
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