OBD Guide
ENFRDEESPT

P266C

A Rocker Arm Actuator Position Sensor Circuit Low Bank 2

P266C is an OBD-II diagnostic trouble code meaning: A Rocker Arm Actuator Position Sensor Circuit Low Bank 2. Common causes: open or short circuit in the sensor circuit, malfunction of the rocker actuator position sensor. Estimated repair cost: $39–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$39–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Rough engine idling
  • Increased fuel consumption
  • Gear shifting problems (if the system affects the transmission)

Causes

  • Open or short circuit in the sensor circuit
  • Malfunction of the rocker actuator position sensor
  • Problems with the actuator solenoid valve
  • Mechanical failure of the rocker arm actuator
  • Engine ECU malfunction (rare)

How to Fix

  1. Check the integrity of the sensor circuit (wire harness, connectors)
  2. Test the resistance and signal of the actuator position sensor
  3. Check the operation of the actuator solenoid valve
  4. Inspect the mechanical part of the rocker arm actuator for damage
  5. If necessary, replace the sensor or rocker arm actuator

Related codes

P266DP266BP266A

Error P266C by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P266C code mean?

P266C is an OBD-II diagnostic trouble code that indicates: A Rocker Arm Actuator Position Sensor Circuit Low Bank 2

What causes a P266C error code?

The most common causes of P266C include: Open or short circuit in the sensor circuit; Malfunction of the rocker actuator position sensor; Problems with the actuator solenoid valve; Mechanical failure of the rocker arm actuator.

How do I fix a P266C diagnostic trouble code?

To fix P266C: Check the integrity of the sensor circuit (wire harness, connectors). Test the resistance and signal of the actuator position sensor. Check the operation of the actuator solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P266C?

Limited driving only, diagnose soon

How much does it cost to fix P266C?

The estimated repair cost for P266C is $39–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat