OBD Guide
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P1771

Throttle Position Sensor Open Circuit

P1771 is an OBD-II diagnostic trouble code meaning: Throttle Position Sensor Open Circuit. Common causes: broken wires in the sensor circuit, oxidation of contacts in the tps connector. 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 Illuminates
  • Reduced engine power
  • Increased fuel consumption

Causes

  • Broken wires in the sensor circuit
  • Oxidation of contacts in the TPS connector
  • Malfunction of the throttle position sensor itself
  • Wiring harness damage
  • Problems with the engine control unit (rare)

How to Fix

  1. Check the integrity of the wiring to the sensor
  2. Clean the contacts in the TPS connector
  3. Check sensor resistance
  4. Replace the throttle position sensor if necessary
  5. Test work after repair

Related codes

P0120P0121P0122

Error P1771 by Vehicle Brand

MazdaVolkswagen

FAQ

What does the P1771 code mean?

P1771 is an OBD-II diagnostic trouble code that indicates: Throttle Position Sensor Open Circuit

What causes a P1771 error code?

The most common causes of P1771 include: Broken wires in the sensor circuit; Oxidation of contacts in the TPS connector; Malfunction of the throttle position sensor itself; Wiring harness damage.

How do I fix a P1771 diagnostic trouble code?

To fix P1771: Check the integrity of the wiring to the sensor. Clean the contacts in the TPS connector. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1771?

Limited driving only, diagnose soon

How much does it cost to fix P1771?

The estimated repair cost for P1771 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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