P2676 – Low Air Filter Input Control Circuit

P2676 Possible Causes

  • Faulty air filter input command
  • Air filter input command harness is open or short-circuited
  • Poor electrical connection of the air filter input command circuit

How to Fix Code P2676

Check the “Possible Causes” listed above. Visually inspect the cable harness and related 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)

P2676 Meaning

The Powertrain Control Module (PCM) monitors the air filter input command circuit. The PCM sets the OBDII code when the air filter input command circuit falls outside factory specifications.

P2677 – High Air Filter Input Control Circuit

P2677 Possible Causes

  • Faulty air intake filter command
  • Air intake filter command harness is open or short-circuited
  • Poor electrical connection in the air intake filter command circuit

How to Fix Code P2677

Check the “Possible Causes” listed above. Visually inspect the cable harness and related 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)

P2677 Meaning

The Powertrain Control Module (PCM) monitors the air intake filter command circuit. The PCM sets the OBDII code when the air intake filter command circuit falls outside factory specifications.

P2678 – Coolant Bleed Valve Control Circuit / Open

P2678 Possible Causes

  • Faulty coolant degas valve
  • Coolant degas valve harness is open or shorted
  • Poor electrical connection in coolant degas valve circuit

How to Fix Code P2678

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

Check Engine Light illuminated (or Service Engine Soon warning light)

P2678 Meaning

The Powertrain Control Module (PCM) monitors the coolant degas valve control circuit. The PCM sets the OBDII code when the coolant degas valve control circuit falls outside factory specifications.

P2679 – Low Coolant Degas Valve Control Circuit

P2679 Possible Causes

  • Faulty coolant degas valve
  • Coolant degas valve harness is open or shorted
  • Poor electrical connection in coolant degas valve circuit

How to Fix Code P2679

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

Check Engine Light illuminated (or Service Engine Soon warning light)

P2679 Meaning

The Powertrain Control Module (PCM) monitors the coolant degas valve control circuit. The PCM sets the OBDII code when the coolant degas valve control circuit falls outside factory specifications.

P267A – Actuator Rocker Position Sensor Circuit ‘B’, Bank 2

P267A Possible Causes

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

How to Fix Code P267A

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)

P267A 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 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 “B” and sets the OBDII code when the rocker arm actuator position sensor “B” signal is outside factory specifications.

P267B – Range / Performance of Rocker Actuator Position Sensor Circuit “B”, Row 2

P267B Possible Causes

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

How to Fix Code P267B

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)

P267B 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 position sensor “B” and sets the OBDII code when the rocker arm actuator position sensor “B” signal is outside factory specifications.

P267C – Actuator Rocker Position Sensor Circuit ‘B’, Bank 2

P267C Possible Causes

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

How to Fix Code P267C

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)

P267C 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 “B” and sets the OBDII code when the rocker arm actuator position sensor “B” signal is outside factory specifications.

P267D – Actuator Rocker Position Sensor Circuit ‘B’, Row 2

P267D Possible Causes

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

How to Fix Code P267D

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)

P267D 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 “B” and sets the OBDII code when the rocker arm actuator position sensor “B” signal is outside factory specifications.

P267E – Rocker Actuator ‘B’ Position Sensor Circuit, Intermittent / Erratic, Bank 2

P267E Possible Causes

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

How to Fix Code P267E

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)

P267E 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 “B” and sets the OBDII code when the rocker arm actuator position sensor “B” signal is outside factory specifications.

P2680 – High Coolant Bleed Valve Control Circuit

P2680 Possible Causes

  • Faulty coolant degas valve
  • Coolant degas valve harness is open or shorted
  • Poor electrical connection in coolant degas valve circuit

How to Fix Code P2680

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)

P2680 Meaning

The Powertrain Control Module (PCM) monitors the coolant degas valve control circuit. The PCM sets the OBDII code when the coolant degas valve control circuit falls outside factory specifications.