Possible fluid contamination should be disclosed before further driving or servicing. Do not attempt to dilute an unknown product or reset the warning to continue using the system.
Identify what was added
Keep the container or product photograph and approximate quantity. Contact an appropriate workshop for a vehicle-specific assessment and handling plan. A dashboard quality message alone does not prove the contents are wrong, but a known filling mistake is important evidence.
The repair route should distinguish fluid condition, sensing and system faults. Do not authorise an emissions deletion to avoid diagnosis. Provide the full scan and timeline so any cleaning, component work or supported reset follows the established cause rather than an assumption based on one code.
Need help with this fault?
- SCR Efficiency Fault Does Not Automatically Condemn a NOx Sensor
- NOx Sensor Replacement Followed by a Communication Code
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