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.
- 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
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.
Mechanics Guide Step-by-step diagnosis
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
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Commonly Affected Vehicles
- 2008-2018 Honda CR-V
- 2007-2017 Toyota RAV4
- 2009-2019 Chevrolet Malibu
- 2010-2020 Nissan Altima
- 2006-2016 Ford Fusion
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