JC Landry, Author at eManualOnline Blog

JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

P067D OBD2: Cylinder 5 Glow Plug Control Circuit High

JC Landry August 24, 2025

Learn all about the P067D code, what causes cylinder 5 glow plug control circuit high, and how to diagnose and fix common issues to maintain optimal engine performance.

P067E OBD2: Cylinder 6 Glow Plug Control Circuit Low

JC Landry August 24, 2025

Learn all about the P067E code, what causes cylinder 6 glow plug control circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

P067F OBD2: Cylinder 6 Glow Plug Control Circuit High

JC Landry August 24, 2025

Learn all about the P067F code, what causes cylinder 6 glow plug control circuit high, and how to diagnose and fix common issues to maintain optimal engine performance.

P0680 OBD2: Cylinder 10 Glow Plug Circuit/Open

JC Landry August 24, 2025

Learn all about the P0680 code, what causes cylinder 10 glow plug circuit/open, and how to diagnose and fix common issues to maintain optimal engine performance.

P0681 OBD2: Cylinder 11 Glow Plug Circuit/Open

JC Landry August 24, 2025

Learn all about the P0681 code, what causes cylinder 11 glow plug circuit/open issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0682 OBD2: Cylinder 12 Glow Plug Circuit/Open

JC Landry August 24, 2025

Learn all about the P0682 code, what causes cylinder 12 glow plug circuit/open issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0683 OBD2: Glow Plug Control Module to PCM Communication Circuit

JC Landry August 24, 2025

Learn all about the P0683 code, what causes glow plug control module to PCM communication issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0684 OBD2: Glow Plug Control Module to PCM Communication Circuit

JC Landry August 24, 2025

Learn all about the P0684 code, what causes glow plug control module to PCM communication circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0685 OBD2: ECM/PCM Power Relay Control Circuit/Open

JC Landry August 24, 2025

Learn all about the P0685 code, what causes ECM/PCM power relay control circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0686 OBD2: ECM/PCM Power Relay Control Circuit Low

JC Landry August 24, 2025

Learn all about the P0686 code, what causes ECM/PCM power relay control circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.