Throttle/Pedal Position Sensor Maximum Stop Performance
The P2163 code indicates that the Powertrain Control Module (PCM) has detected a malfunction in the throttle/pedal position sensor's maximum stop performance. This typically means the sensor signal is not matching the expected voltage range when the accelerator pedal is fully released or fully depressed, often due to a faulty sensor, wiring issues, or a misadjusted throttle stop.
01. Most Common Causes
- Faulty throttle position sensor (TPS) or accelerator pedal position sensor (APP)
- Damaged or corroded wiring/connectors in the sensor circuit
- Misadjusted or damaged throttle stop screw
- Carbon buildup on throttle body affecting sensor readings
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration or hesitation
- Unstable idle or stalling
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P2163 and check for additional codes.
Step 2: Visually inspect the throttle body and pedal position sensor wiring for damage or corrosion.
Step 3: Test the TPS/APP sensor voltage with a multimeter while slowly pressing the accelerator pedal.
Step 4: Check for carbon buildup on the throttle plate and clean if necessary.
Step 5: Verify throttle stop adjustment and replace sensor if readings are out of spec.
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 reduced power, stalling, or unresponsive throttle, leading to unsafe driving conditions.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on whether the sensor or throttle body needs replacement.