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.

P0355 OBD2: Ignition Coil “E” Circuit Malfunction

JC Landry September 15, 2025

Learn all about the P0355 code, what causes ignition coil "E" circuit malfunction, and how to diagnose and fix common issues to maintain optimal engine performance.

P0328 OBD2: Knock Sensor 1 Circuit High

JC Landry September 15, 2025

Learn all about the P0328 code, what causes knock sensor circuit high input issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0600 OBD2: Serial Communication Link Malfunction

JC Landry September 15, 2025

Learn all about the P0600 code, what causes serial communication link malfunction, and how to diagnose and fix common issues to maintain optimal engine performance.

P0450 OBD2: Evaporative Emission System Pressure Sensor/Switch

JC Landry September 15, 2025

Learn all about the P0450 code, what causes evaporative emission system pressure sensor issues, and how to diagnose and fix common problems to maintain optimal engine performance.

P0380 OBD2: Glow Plug/Heater Circuit “A” Malfunction

JC Landry September 15, 2025

Learn all about the P0380 code, what causes glow plug/heater circuit malfunction, and how to diagnose and fix common issues to maintain optimal engine performance.

P0202 OBD2: Injector Circuit/Open – Cylinder 2

JC Landry September 15, 2025

Learn all about the P0202 code, what causes injector circuit malfunction in cylinder 2, and how to diagnose and fix common issues to maintain optimal engine performance.

P0131 OBD2: O2 Sensor Circuit Low Voltage

JC Landry September 15, 2025

Learn all about the P0131 code, what causes low voltage in the O2 sensor circuit, and how to diagnose and fix common issues to maintain optimal engine performance.

P0137 OBD2: O2 Sensor Circuit Low Voltage

JC Landry September 15, 2025

Learn all about the P0137 code, what causes O2 sensor circuit low voltage, and how to diagnose and fix common issues to maintain optimal engine performance.

P0330 OBD2: Knock Sensor 2 Circuit

JC Landry September 15, 2025

Learn all about the P0330 code, what causes knock sensor circuit malfunctions, and how to diagnose and fix common issues to maintain optimal engine performance.

P0136 OBD2: O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)

JC Landry September 15, 2025

Learn all about the P0136 code, what causes O2 sensor circuit low voltage (Bank 1, Sensor 2), and how to diagnose and fix common issues to maintain optimal engine performance.