Throttle/Pedal Position Sensor Minimum Stop Performance
Code P2116 indicates that the Engine Control Module (ECM) has detected that the throttle position sensor or accelerator pedal position sensor is not reading the expected minimum stop position. This typically means the sensor signal is out of range or the throttle plate is not closing properly. The ECM uses this sensor to monitor throttle angle; when the pedal is released, the throttle should return to idle. A fault can cause incorrect air-fuel mixture, leading to drivability issues.
01. Most Common Causes
- Faulty throttle position sensor (TPS) or accelerator pedal position sensor (APP)
- Carbon buildup on throttle body preventing proper closure
- Wiring or connector issues (corrosion, loose connections, shorts)
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor idle or stalling
- Unresponsive or delayed throttle response
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P2116 and check for other related codes.
Step 2: Visually inspect throttle body for carbon buildup; clean if necessary.
Step 3: Test TPS/APP sensor voltage with a multimeter; compare to manufacturer specs.
Step 4: Check wiring and connectors for damage, corrosion, or loose pins.
Step 5: If all else fails, replace the TPS or APP sensor and clear codes.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may enter limp mode, reducing power and speed, which can be dangerous in traffic. Have it diagnosed promptly.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on the sensor and labor rates. Cleaning the throttle body may cost less.