OBD Guide
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P077C

Output Shaft Speed Sensor Circuit Low

P077C is an OBD-II diagnostic trouble code meaning: Output Shaft Speed Sensor Circuit Low. Common causes: faulty output shaft speed sensor, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

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

Symptoms

  • Incorrect gear shifting
  • Transmission of the gearbox into emergency mode
  • Check engine light comes on
  • Reduced vehicle dynamics
  • Problems with cruise control

Causes

  • Faulty output shaft speed sensor
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Problems with the transmission control unit

How to Fix

  1. Check the condition of the output shaft speed sensor
  2. Inspect the sensor circuit for damage
  3. Check connections and contacts in connectors
  4. Test the sensor with a multimeter
  5. If necessary, replace the sensor or repair the wiring

Related codes

P077DP0720P0721

Error P077C by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P077C code mean?

P077C is an OBD-II diagnostic trouble code that indicates: Output Shaft Speed Sensor Circuit Low

What causes a P077C error code?

The most common causes of P077C include: Faulty output shaft speed sensor; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a P077C diagnostic trouble code?

To fix P077C: Check the condition of the output shaft speed sensor. Inspect the sensor circuit for damage. Check connections and contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P077C?

Limited driving only, diagnose soon

How much does it cost to fix P077C?

The estimated repair cost for P077C is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat