Throttle/Pedal Position Sensor Minimum Stop Performance
Code P2117 indicates that the throttle actuator control (TAC) module has detected that the throttle plate is not returning to its minimum idle position as expected. This can be caused by a faulty throttle position sensor, a sticking throttle body, or wiring issues. The TAC system uses two throttle position sensors (TPS) to monitor pedal input and throttle plate angle; when the signals don't match the expected minimum stop position, the code sets.
01. Most Common Causes
- Faulty throttle position sensor (TPS)
- Carbon buildup on throttle body causing sticking
- Wiring or connector issues in TPS circuit
- Faulty accelerator pedal position sensor (APP)
02. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine power or limp mode
- Poor idle or stalling
- Unresponsive or jerky throttle
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect throttle body for carbon buildup and clean if necessary.
Step 3: Test TPS and APP sensor signals with a multimeter or scan tool.
Step 4: Check wiring and connectors for damage, corrosion, or loose connections.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may enter limp mode, reducing power and increasing risk of accidents. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
Costs range from $50 to $150 for cleaning or sensor replacement, but can be higher if the throttle body assembly needs replacement.