VW Code 12487
12487 Description And Summary : |
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The problem is about exhaust bank 3, probe 2 signal too slowly mechanic will need to check all electrical connections in the camshaft sensor reductant / regeneration supply control, circuit / open and wait then oxygen (lambda) sensor b2 s1, pump current, short to ground is the final reason of the code. |
12487 Possible Causes:
12487 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 1 Injector Circuit Low
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 12487 Code
- Inspect all the connections intake air heater "a", circuit open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns