OBD Guide
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B2971

Pedal Position Input Short To Ground

B2971 is an OBD-II diagnostic trouble code meaning: Pedal Position Input Short To Ground. Common causes: damage to the pedal position sensor wiring harness, pedal position sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Unstable engine operation at idle
  • Power loss when pressing the gas pedal
  • Check Engine Light Illuminates
  • Engine power limitation (emergency mode)

Causes

  • Damage to the pedal position sensor wiring harness
  • Pedal position sensor malfunction
  • Short circuit to ground
  • Oxidation or damage to sensor connectors

How to Fix

  1. Check the integrity of the pedal position sensor wiring harness
  2. Check the resistance and signal of the pedal position sensor
  3. Inspect the sensor connectors for damage and oxidation.
  4. Replace the pedal position sensor if it is faulty
  5. Clean or replace connectors if necessary

Related codes

P0120P0220P2122P2127

FAQ

What does the B2971 code mean?

B2971 is an OBD-II diagnostic trouble code that indicates: Pedal Position Input Short To Ground

What causes a B2971 error code?

The most common causes of B2971 include: Damage to the pedal position sensor wiring harness; Pedal position sensor malfunction; Short circuit to ground; Oxidation or damage to sensor connectors.

How do I fix a B2971 diagnostic trouble code?

To fix B2971: Check the integrity of the pedal position sensor wiring harness. Check the resistance and signal of the pedal position sensor. Inspect the sensor connectors for damage and oxidation.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2971?

Limited driving only, diagnose soon

How much does it cost to fix B2971?

The estimated repair cost for B2971 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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