What does code P1157 mean on Volkswagen vehicles?
The ECU detects incorrect supply voltage to the MAP sensor.
OBD-II Code Volkswagen
P1157 — Volkswagen — Manifold Absolute Pressure Sensor Supply Voltage Malfunction
The ECU detects incorrect supply voltage to the MAP sensor.
Common symptoms
- Check engine light
Possible causes
- Electrical supply fault
- wiring issues
- ECU malfunction
Initial recommendation
Verify MAP sensor power supply and ground circuits.
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 P1157 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands