P0226 moderate

Throttle/Pedal Position Sensor C Circuit Intermittent

The P0226 code means the vehicle's onboard diagnostic system has detected: Throttle/Pedal Position Sensor C Circuit Intermittent. This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $80 - $500 (parts and labor)

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Common Symptoms

Check Engine Light on intermittently
Momentary loss of throttle response
Engine may surge or hesitate briefly
Reduced power mode may activate and deactivate

Probable Causes (Ranked by Likelihood)

Loose or corroded TPS C connector Very High
Intermittent break in TPS C wiring High
Failing TPS C with internal connection issue Moderate
Vibration-induced connector fault Low

Step-by-Step Diagnostic Procedure

Monitor TPS C on scan tool while wiggling the throttle body connector. Watch for signal dropouts.
Inspect connector pins for corrosion, bent pins, or loose fit.
Check wiring for cracked insulation or intermittent breaks at stress points.
If connector and wiring are good, replace the throttle body or pedal assembly (sensor is often not separately serviceable).

Frequently Asked Questions

What causes intermittent TPS problems?

The most common cause is a loose or corroded connector. Vibration and heat cycling over time can degrade connector contacts.

Can I drive with an intermittent TPS code?

You can drive short distances, but the intermittent nature means the vehicle may unexpectedly enter limp mode. This is a safety concern.

Do I need to replace the whole throttle body?

Often yes, because TPS sensors are frequently integrated into the throttle body and not available separately. Check parts availability for your vehicle.