P2163 moderate

EGR Throttle Position Sensor Circuit Low

The P2163 code means the vehicle's onboard diagnostic system has detected: EGR Throttle Position Sensor Circuit Low. This is a moderate severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: moderate
Estimated cost: $80 - $400 (parts and labor)

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Common Symptoms

Check Engine Light on
Rough idle
Increased NOx emissions
Failed emissions test
Slight hesitation during acceleration

Probable Causes (Ranked by Likelihood)

Short to ground in EGR TPS circuit Very High
Failed EGR TPS with low output High
Wiring shorted near engine Moderate
ECM input shorted Low

Step-by-Step Diagnostic Procedure

Read EGR position sensor data on scan tool
Inspect EGR valve and sensor for carbon buildup
Measure EGR TPS reference voltage and signal
Clean EGR valve and retest sensor operation

Frequently Asked Questions

What does P2163 mean?

P2163 indicates: EGR Throttle Position Sensor Circuit Low. The ECM detected an abnormal condition in this sensor circuit.

Is P2163 serious?

Moderate. The vehicle may enter limp mode. Repair promptly.

What should I check first?

Start with a visual inspection of the sensor wiring and connector. Use a scan tool to read sensor data and compare to expected values. Check reference voltage (typically 5V) at the sensor connector.