Volkswagen Code P1374 – Cylinder 7 Ignition Circuit Short to B+

Volkswagen P1374 Code Description

The diagnostic trouble code P1374 (DTC) in Volkswagen vehicles indicates a short circuit in the ignition circuit of cylinder 7, causing it to connect to the battery’s positive terminal (B+). This means there is an abnormal electrical connection between the ignition system of cylinder 7 and the battery, which can disrupt the engine’s proper operation.

Common Causes of Volkswagen P1374 Code

NOTE: The listed causes may not be a complete list of all potential issues, and there could be other causes.

1. Faulty ignition coil in cylinder 7
2. Short circuit in the wiring harness leading to cylinder 7
3. Corrosion or damage to electrical connectors related to cylinder 7
4. Problems with the engine control module (ECM) affecting the ignition system
5. Environmental factors such as moisture or debris causing electrical disruptions

Symptoms of Volkswagen P1374 Code

1. Engine misfires
2. Rough or irregular idling
3. Stalling
4. Reduced power and acceleration
5. Decreased fuel efficiency

How to Fix Volkswagen P1374 Code

1. Diagnose the specific cause of the short circuit in cylinder 7’s ignition circuit using a multimeter and wiring diagrams.
2. Inspect and replace the ignition coil of cylinder 7 if found to be faulty.
3. Check the wiring harness for any signs of damage or corrosion, and repair or replace as needed.
4. Inspect and clean the electrical connectors related to cylinder 7 to ensure proper connection.
5. Reset the error codes and test the vehicle to ensure the issue has been resolved.