OBD Guide

P2166

Throttle/Pedal Position Sensor D Maximum Stop Performance

P2166 is an OBD-II diagnostic trouble code meaning: Throttle/Pedal Position Sensor D Maximum Stop Performance. Common causes: throttle position sensor d malfunction, throttle valve sticking. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Rough idle
  • Reduced engine power
  • Check Engine light comes on
  • Dips when pressing the gas pedal
  • Increased fuel consumption

Causes

  • Throttle position sensor D malfunction
  • Throttle valve sticking
  • Problems with wiring or contacts
  • Short circuit in the sensor circuit
  • ECU malfunction

How to Fix

  1. Check the condition of the throttle valve for sticking
  2. Check the integrity of the wiring and contacts of the sensor
  3. Test throttle position sensor D
  4. Replace the faulty sensor if necessary
  5. Reset the error and check the system operation

Related codes

Error P2166 by Vehicle Brand

FAQ

What does the P2166 code mean?

P2166 is an OBD-II diagnostic trouble code that indicates: Throttle/Pedal Position Sensor D Maximum Stop Performance

What causes a P2166 error code?

The most common causes of P2166 include: Throttle position sensor D malfunction; Throttle valve sticking; Problems with wiring or contacts; Short circuit in the sensor circuit.

How do I fix a P2166 diagnostic trouble code?

To fix P2166: Check the condition of the throttle valve for sticking. Check the integrity of the wiring and contacts of the sensor. Test throttle position sensor D. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2166?

Yes, but get it checked soon

How much does it cost to fix P2166?

The estimated repair cost for P2166 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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