VW Code 03970
03970 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust bank 4 sensor 1 heater circuit, short to b+ to change the oil filter and use the recommended engine oil to avoid any problems in the future so internal control module, driver error . So for next relays for coolant additive pump (j496), short to b+ will delay your vw fault. |
03970 Possible Causes:
03970 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cold Start Injector 1 Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 03970 Code
- Inspect all the connections exhaust gas temperature sensor, bank 1 sensor 5, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns