OBD Guide
ENFRDEESPT

P2120

Throttle/Pedal Position Sensor/Switch D Circuit

P2120 is an OBD-II diagnostic trouble code meaning: Throttle/Pedal Position Sensor/Switch D Circuit. Common causes: open or short circuit in the sensor circuit, gas pedal 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 operation
  • Check Engine light comes on
  • Power Loss
  • Acceleration problems
  • The car goes into emergency mode

Causes

  • Open or short circuit in the sensor circuit
  • Gas pedal position sensor malfunction
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Engine control module (ECM) malfunction

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect the connectors and contacts of the sensor
  3. Check the resistance of the gas pedal position sensor
  4. Replace sensor if necessary
  5. Check the operation of the engine control unit

Related codes

P2121P2122P2123

Error P2120 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2120 code mean?

P2120 is an OBD-II diagnostic trouble code that indicates: Throttle/Pedal Position Sensor/Switch D Circuit

What causes a P2120 error code?

The most common causes of P2120 include: Open or short circuit in the sensor circuit; Gas pedal position sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a P2120 diagnostic trouble code?

To fix P2120: Check the integrity of the sensor circuit. Inspect the connectors and contacts of the sensor. Check the resistance of the gas pedal position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2120?

Limited driving only, diagnose soon

How much does it cost to fix P2120?

The estimated repair cost for P2120 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat