What does code P1156 mean on Volkswagen vehicles?
The MAP sensor circuit is open or shorted to ground, preventing accurate pressure measurement.
OBD-II Code Volkswagen
P1156 — Volkswagen — Manifold Absolute Pressure Sensor Open or Short to Ground
The MAP sensor circuit is open or shorted to ground, preventing accurate pressure measurement.
Common symptoms
- Check engine light
Possible causes
- Faulty MAP sensor
- damaged wiring harness
Initial recommendation
Perform electrical diagnostics on MAP sensor circuit and repair wiring as needed.
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
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