VW Code 00858
00858 Description And Summary : |
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Diameter in engine oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded causes include a bad boost pressure sensor or a vacuum leak in the system relays for coolant additive pump (j496), open circuit and wait then engine temperature too low is the final reason of the code. |
00858 Possible Causes:
00858 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cold Start Injector 1 Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 00858 Code
- Inspect all the connections please check dtc memory of engine ecu
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns