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.

P2342 OBD2: Cylinder 7 Above Knock Threshold

JC Landry June 6, 2025

Learn all about the P2342 code, what causes cylinder 7 to exceed knock threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

P2343 OBD2: Cylinder 8 Above Knock Threshold

JC Landry June 5, 2025

Learn all about the P2343 code, what causes Cylinder 8 above knock threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

P2338 OBD2: Cylinder 3 Above Knock Threshold

JC Landry June 5, 2025

Learn all about the P2338 code, what causes cylinder 3 to exceed knock threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

P2339 OBD2: Cylinder 4 Above Knock Threshold

JC Landry June 5, 2025

Learn all about the P2339 code, what causes cylinder 4 to exceed knock threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

P2344 OBD2: Cylinder 9 Above Knock Threshold

JC Landry June 5, 2025

Learn all about the P2344 code, what causes Cylinder 9 Above Knock Threshold, and how to diagnose and fix common issues to maintain optimal engine performance.

P2401 OBD2: Evaporative Emission System Leak Detection Pump Control Circuit

JC Landry June 5, 2025

Learn all about the P2401 code, what causes evaporative emission system leak detection pump control circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P2402 OBD2: Evaporative Emission System Leak Detection Pump Control Circuit

JC Landry June 5, 2025

Learn all about the P2402 code, what causes evaporative emission system leak detection pump control circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P2404 OBD2: Evaporative Emission System Leak Detection Pump Sense Circuit

JC Landry June 5, 2025

Learn all about the P2404 code, what causes evaporative emission system leak detection pump sense circuit issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P2400 OBD2: Evaporative Emission System Leak Detection Pump Control

JC Landry June 5, 2025

Learn all about the P2400 code, what causes evaporative emission system leak detection pump control issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P2403 OBD2: Evaporative Emission System Leak Detection Pump Sense

JC Landry June 5, 2025

Learn all about the P2403 code, what causes evaporative emission system leak detection pump sense, and how to diagnose and fix common issues to maintain optimal engine performance.