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.

P064A OBD2: Fuel Pump Control Module

JC Landry August 25, 2025

Learn all about the P064A code, what causes fuel pump control module issues, and how to diagnose and fix common issues to maintain optimal engine performance.

P064B OBD2: PTO Control Module Failure

JC Landry August 25, 2025

Learn all about the P064B code, what causes PTO control module failure, and how to diagnose and fix common issues to maintain optimal engine performance.

P064C OBD2: Glow Plug Control Module

JC Landry August 25, 2025

Learn all about the P064C code, what causes issues with the glow plug control module, and how to diagnose and fix common problems to maintain optimal engine performance.

P064D OBD2: Internal Control Module O2 Sensor Processor Performance

JC Landry August 25, 2025

Learn all about the P064D code, what causes internal control module O2 sensor processor performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P064E OBD2: Internal Control Module O2 Sensor Processor Performance

JC Landry August 25, 2025

Learn all about the P064E code, what causes internal control module O2 sensor processor performance issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P064F OBD2: Unauthorized Software/Calibration Detected

JC Landry August 25, 2025

Learn all about the P064F code, what causes unauthorized software/calibration detected, and how to diagnose and fix common issues to maintain optimal engine performance.

P0651 OBD2: Sensor Reference Voltage “B” Circuit/Open

JC Landry August 25, 2025

Learn all about the P0651 code, what causes sensor reference voltage 'B' circuit/open, and how to diagnose and fix common issues to maintain optimal engine performance.

P0652 OBD2: Sensor Reference Voltage “B” Circuit Low

JC Landry August 25, 2025

Learn all about the P0652 code, what causes sensor reference voltage 'B' circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.

P0653 OBD2: Sensor Reference Voltage “B” Circuit High

JC Landry August 25, 2025

Learn all about the P0653 code, what causes sensor reference voltage issues, and how to diagnose and fix common issues to maintain optimal engine performance.

P0654 OBD2: Engine RPM Output Circuit

JC Landry August 25, 2025

Learn all about the P0654 code, what causes engine RPM output circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.