P2133 critical

Throttle/Pedal Position Sensor/Switch F Circuit High

The P2133 code means the vehicle's onboard diagnostic system has detected: Throttle/Pedal Position Sensor/Switch F Circuit High. This is a critical severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $150 - $600 (parts and labor)

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Common Symptoms

Reduced power warning
Engine may idle high
Throttle response limited
Potential surge at idle
Check engine light on

Probable Causes (Ranked by Likelihood)

TPS F signal wire open or shorted to reference voltage Very High
Disconnected or loose throttle body connector High
Faulty TPS F sensor (stuck at high voltage) Moderate
Signal wire shorted to reference wire in harness Moderate
PCM input circuit pulling signal high Low

Step-by-Step Diagnostic Procedure

Verify throttle body connector is securely connected
Check TPS F voltage -- should not be at or near 5V when throttle is closed
Disconnect throttle body and measure F signal wire -- should not have voltage present
Inspect wiring harness for damage where TPS F signal and reference wires run together
Replace electronic throttle body if wiring is good and sensor reads incorrectly

Frequently Asked Questions

Can I drive with code P2133?

Only short distances with reduced power. The PCM limits throttle control when TPS F reads abnormally high since it cannot accurately determine throttle position.

Why would TPS F read high with the throttle closed?

A high reading at closed throttle typically means the signal wire is disconnected (floating to 5V reference), shorted to the reference wire, or the sensor element is damaged and stuck at a high output. Check the connector first.

Do I need to do a throttle relearn after replacing the throttle body?

Yes. After replacing the electronic throttle body, you must perform a throttle relearn procedure. This teaches the PCM the new closed and open throttle positions. The procedure varies by manufacturer and often requires a scan tool.