Throttle/Pedal Position Sensor Maximum Stop Performance
The P2164 code indicates that the Powertrain Control Module (PCM) has detected a fault in the throttle/pedal position sensor circuit related to the maximum stop position. This sensor is critical for determining driver demand and throttle angle. The code sets when the sensor signal indicates a position beyond the expected maximum stop range, often due to a mechanical binding, sensor misalignment, or electrical issue. This can lead to reduced engine power, poor acceleration, and potential safety concerns.
01. Most Common Causes
- Faulty throttle/pedal position sensor
- Wiring or connector issues in the sensor circuit
- Carbon buildup on throttle body causing mechanical binding
- PCM software or hardware malfunction
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration or hesitation
- Erratic idle or stalling
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P2164 and check for additional codes.
Step 2: Visually inspect the throttle body and pedal position sensor for damage, binding, or carbon buildup.
Step 3: Test the sensor's voltage and resistance with a multimeter per manufacturer specifications.
Step 4: Check wiring and connectors for corrosion, breaks, or loose connections.
Step 5: If no issues found, perform a throttle body relearn procedure or replace the sensor.
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 or reduced engine power, increasing the risk of an accident.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement, but can be higher if the throttle body or PCM needs replacement.