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.

P0305 OBD2: Cylinder 5 Misfire Detected

JC Landry September 17, 2025

Learn all about the P0305 code, what causes cylinder 5 misfire, and how to diagnose and fix common issues to maintain optimal engine performance.

P0306 OBD2: Cylinder 6 Misfire Detected

JC Landry September 17, 2025

Learn all about the P0306 code, what causes cylinder 6 misfire, and how to diagnose and fix common issues to maintain optimal engine performance.

P0307 OBD2: Cylinder 7 Misfire Detected

JC Landry September 17, 2025

Learn all about the P0307 code, what causes cylinder 7 misfire, and how to diagnose and fix common issues to maintain optimal engine performance.

P0308 OBD2: Cylinder 8 Misfire Detected

JC Landry September 17, 2025

Learn all about the P0308 code, what causes cylinder 8 misfire, and how to diagnose and fix common issues to maintain optimal engine performance.

P0442 OBD2: Evaporative Emission System Leak Detected (Small Leak)

JC Landry September 17, 2025

Learn all about the P0442 code, what causes evaporative emission system leak detected (small leak), and how to diagnose and fix common issues to maintain optimal engine performance.

P0451 OBD2: Evaporative Emission System Pressure Sensor/Switch

JC Landry September 17, 2025

Learn all about the P0451 code, what causes evaporative emission system pressure sensor issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0740 OBD2: Torque Converter Clutch Circuit/Open

JC Landry September 17, 2025

Learn all about the P0740 code, what causes torque converter clutch circuit/open issues, and how to diagnose and fix common problems to maintain optimal vehicle performance.

P0128 OBD2: Coolant Temperature Below Thermostat Regulating Temperature

JC Landry September 17, 2025

Learn all about the P0128 code, what causes coolant temperature issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0125 OBD2: Insufficient Coolant Temperature for Closed Loop Fuel Control

JC Landry September 17, 2025

Learn all about the P0125 code, what causes insufficient coolant temperature for closed loop fuel control, and how to diagnose and fix common issues to maintain optimal engine performance.

P0455 OBD2: Evaporative Emission System Leak Detected (Large Leak)

JC Landry September 17, 2025

Learn all about the P0455 code, what causes evaporative emission system leak detected (large leak), and how to diagnose and fix common issues to maintain optimal engine performance.