What does code P1237 mean on Volkswagen vehicles?
The ECU detects an open circuit in the fuel injector circuit for cylinder 1, preventing injector operation.
OBD-II Code Volkswagen
P1237 — Volkswagen — Injector Circuit Open Cylinder 1
The ECU detects an open circuit in the fuel injector circuit for cylinder 1, preventing injector operation.
Common symptoms
- Cylinder inoperative
- misfire
Possible causes
- Cut or disconnected wiring
- faulty connector
Initial recommendation
Check circuit continuity and repair wiring or connector.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Volkswagen code P1237 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands