Engine warning light comes on.
If the customer complains that the engine warning light comes on, the fault code P0030 (heated lambda probe 1, cylinder row 1, heating control circuit malfunction) may be stored.
The cause of the problem may be a poor production quality of solder joints in the wiring harness.
Possible cause:
- Interruption or excessive resistance in the wiring harness of the heated lambda probe.
- Interruption or excessive resistance in the wiring harness of the manifold air pressure sensor.
Remedy:
- Check solder joints in the wiring harness.
- Repair wiring harness if necessary.
Important safety note
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