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 notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The reprinting, distribution, reproduction, exploitation in any form and disclosure of the contents of this document, even in part, is prohibited without our express written approval and indication of the source. The schematic illustrations, figures and descriptions are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved.
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