P264C – Actuator Rocker Position Sensor Circuit ‘A’, Bank 1

P264C Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator sensor ‘A’
  • Rocker arm actuator sensor ‘A’ circuit open or shorted
  • Poor electrical connection in rocker arm actuator sensor ‘A’ circuit

How to Fix Code P264C

Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P264C Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The Variable Valve Timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator position sensor ‘A’ and sets the OBDII code when the rocker arm actuator position sensor ‘A’ signal is outside factory specifications.

P264D – Actuator Rocker Arm ‘A’ Position Sensor Circuit, Bank 1

P264D Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator sensor ‘A’
  • Rocker arm actuator sensor ‘A’ circuit open or shorted
  • Poor electrical connection in rocker arm actuator sensor ‘A’ circuit

How to Fix Code P264D

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P264D Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The Variable Valve Timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator position sensor ‘A’ and sets the OBDII code when the rocker arm actuator position sensor ‘A’ signal is outside factory specifications.

P264E – Rocker Arm Actuator Control Circuit ‘A’, Intermittent/Erratic, Bank 1

P264E Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator sensor ‘A’
  • Open or short circuit in rocker arm actuator sensor ‘A’ harness
  • Poor electrical connection in rocker arm actuator sensor ‘A’ circuit

How to Fix Code P264E

Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P264E Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The Variable Valve Timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator position sensor ‘A’ and sets the OBDII code when the rocker arm actuator position sensor ‘A’ signal is outside factory specifications.

P2650 – Actuator ‘B’ Rocker Control Circuit / Bank Open 1

P2650 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator “B”
  • Rocker arm actuator “B” circuit open or shorted
  • Poor electrical connection in rocker arm actuator “B” circuit

How to Fix Code P2650

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2650 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the Variable Valve Timing system to adjust engine valve timing. The Variable Valve Timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator “B” circuit is outside factory specifications.

P2651 – Performance of Rocker Actuator System “B” / Row 1 Locking

P2651 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator “B”
  • Rocker arm actuator “B” circuit open or shorted
  • Poor electrical connection in rocker arm actuator “B” circuit

How to Fix Code P2651

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2651 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The Variable Valve Timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets OBDII when the rocker arm actuator “B” circuit is outside factory specifications.

P2652 – Rocker Actuator System “B” Stuck on Bank 1

P2652 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator “B”
  • Rocker arm actuator “B” circuit is open or shorted
  • Poor electrical connection in the rocker arm actuator “B” circuit

How to Fix Code P2652

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2652 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust the engine’s valve timing. The variable valve timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator “B” circuit is outside factory specifications.

P2653 – Low value of ‘B’ rocker actuator control circuit, row 1

P2653 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator “B”
  • Rocker arm actuator “B” circuit open or shorted
  • Poor electrical connection in rocker arm actuator “B” circuit

How to Fix Code P2653

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2653 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The variable valve timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator “B” circuit is outside factory specifications.

P2654 – Rocker Actuator ‘B’ Control Circuit High, Bank 1

P2654 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator “B”
  • Rocker arm actuator “B” circuit open or shorted
  • Poor electrical connection in rocker arm actuator “B” circuit

How to Fix Code P2654

Check the “possible causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P2654 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust engine valve timing. The variable valve timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator “B” circuit is outside factory specifications.

P2655 – Actuator Rocker Arm ‘A’ Control Circuit / Open Bank 2

P2655 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator ‘A’
  • Rocker arm actuator ‘A’ circuit is open or shorted
  • Poor electrical connection in the rocker arm actuator ‘A’ circuit

How to Fix Code P2655

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P2655 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust the engine’s valve timing. The variable valve timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator ‘A’ circuit is outside factory specifications.

P2656 – “A” Rocker Actuator System Performance / Row 2 Stuck

P2656 Possible Causes

  • Low or overfilled engine oil
  • Incorrect engine oil type
  • Faulty rocker arm actuator ‘A’
  • Rocker arm actuator ‘A’ circuit is open or shorted
  • Poor electrical connection in the rocker arm actuator ‘A’ circuit

How to Fix Code P2656

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2656 Meaning

The Engine Control Module (ECM) commands the rocker arm actuator to control the hydraulic oil circuit. Oil flows through the rocker arm actuator to the variable valve timing system to adjust the engine’s valve timing. The variable valve timing (VVT) system is used to improve engine performance, fuel economy, or emissions. The ECM monitors the rocker arm actuator circuit and sets the OBDII code when the rocker arm actuator ‘A’ circuit is outside factory specifications.