Throttle/Pedal Position Sensor Maximum Stop Performance
Code P2167 indicates that the Engine Control Module (ECM) has detected a fault in the throttle position sensor (TPS) or accelerator pedal position sensor (APP) circuit, specifically that the sensor signal is stuck at or beyond the maximum stop position. This can be caused by a faulty sensor, wiring issues, or a mechanical problem with the throttle body or pedal assembly. The ECM uses this signal to determine driver demand and control throttle opening; an incorrect reading can lead to reduced engine power, poor acceleration, or limp mode.
1. Most Common Causes
- Faulty accelerator pedal position (APP) sensor 'E'
- Short to voltage in the signal circuit of sensor 'E'
- Faulty 5V reference or ground circuit for sensor 'E'
- Mechanical wear, looseness, or breakage of the accelerator pedal assembly
- Internal PCM failure (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- Poor acceleration or hesitation
- Stalling or rough idle
- Unresponsive or jerky throttle
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect TPS/APP sensor connectors and wiring for damage or corrosion.
Step 3: Test sensor voltage and resistance with a multimeter; compare to manufacturer specs.
Step 4: Check throttle body for carbon buildup and clean if necessary.
Step 5: If all else fails, replace the TPS or APP sensor and clear codes.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the vehicle may enter limp mode, reducing power and potentially causing unsafe driving conditions. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the vehicle and whether the sensor or throttle body needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.