Throttle/Pedal Position Sensor/Switch Circuit High
The P2133 code indicates that the throttle/pedal position sensor/switch circuit is reading a higher voltage than expected. This typically occurs when the sensor or its wiring has a short to voltage, a faulty sensor, or a problem with the electronic throttle control system. The PCM monitors the voltage from the accelerator pedal position sensor and throttle position sensor; if the voltage exceeds the normal range, it sets this code.
01. Most Common Causes
- Faulty accelerator pedal position sensor
- Short to voltage in the sensor circuit
- Damaged wiring or connectors
- Faulty throttle position sensor
- ECM/PCM issues
02. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine power or limp mode
- Poor acceleration or hesitation
- Erratic throttle response
- Engine stalling
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the accelerator pedal position sensor voltage with a multimeter; compare to manufacturer specs.
Step 4: Check the throttle position sensor voltage and circuit integrity.
Step 5: If wiring and sensors are okay, test the ECM/PCM for proper operation.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause sudden loss of throttle control, leading to unsafe driving conditions. The vehicle may enter limp mode, limiting speed and acceleration.
How much does it cost to fix?▼
The cost to fix P2133 typically ranges from $50 to $150 for diagnosis and sensor replacement, but can be higher if wiring repairs or ECM replacement is needed.