P0225 moderate

Throttle/Pedal Position Sensor C Circuit Range/Performance

The P0225 code means the vehicle's onboard diagnostic system has detected: Throttle/Pedal Position Sensor C Circuit Range/Performance. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
moderate
Estimated cost
$80 - $400 (parts and labor)
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Common Symptoms

  • Check Engine Light illuminated
  • Vehicle in reduced power mode
  • Hesitation on acceleration
  • Inconsistent throttle response

Probable Causes (Ranked by Likelihood)

  • Worn or degraded TPS C sensor element Very High
  • Throttle body carbon buildup affecting sensor travel High
  • Intermittent wiring connection to TPS C Moderate
  • PCM software calibration error Low

Step-by-Step Diagnostic Procedure

  1. Monitor TPS C on scan tool during slow throttle sweep. Look for dead spots, jumps, or inconsistent readings.

  2. Compare TPS C to TPS A and B. All should track proportionally.

  3. Clean the throttle body with throttle body cleaner. Carbon buildup can restrict sensor travel.

  4. Check for loose or corroded connector pins at the throttle body.

Frequently Asked Questions

What does range/performance mean for TPS C?

The sensor is responding but its readings are outside the expected range or not tracking correctly with throttle movement. This often indicates a worn sensor.

Can cleaning the throttle body fix P0225?

Sometimes yes. Carbon buildup on the throttle plate can prevent full travel, causing the sensor to read outside its expected range.

Will P0225 cause limp mode?

Yes, most vehicles will enter reduced power mode when a TPS range/performance code is set, as the PCM cannot reliably determine throttle position.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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