OBD Guide
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P16A2

Throttle Position Sensor Communication Circuit Performance

P16A2 is an OBD-II diagnostic trouble code meaning: Throttle Position Sensor Communication Circuit Performance. Common causes: open or short circuit in the sensor circuit, throttle position sensor malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

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

Causes

  • Open or short circuit in the sensor circuit
  • Throttle Position Sensor Malfunction
  • Poor contact in connectors
  • Wiring harness damage
  • Problems with the engine ECU

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and contacts for oxidation or damage
  3. Check the operation of the throttle position sensor
  4. Replace sensor if necessary
  5. Check wiring harness for damage

Related codes

P0120P0121P0122P0123

FAQ

What does the P16A2 code mean?

P16A2 is an OBD-II diagnostic trouble code that indicates: Throttle Position Sensor Communication Circuit Performance

What causes a P16A2 error code?

The most common causes of P16A2 include: Open or short circuit in the sensor circuit; Throttle Position Sensor Malfunction; Poor contact in connectors; Wiring harness damage.

How do I fix a P16A2 diagnostic trouble code?

To fix P16A2: Check the integrity of the sensor circuit. Inspect connectors and contacts for oxidation or damage. Check the operation of the throttle position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16A2?

Limited driving only, diagnose soon

How much does it cost to fix P16A2?

The estimated repair cost for P16A2 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat