Manufacturer-specific fault
B1127 — Mercedes Benz
Real-world scan data
Seen in
229
scans in the past year
Found in
1.8%
of scans
#936
most common code across all scans
Appears alongside · share of B1127 scans
P200Ain 24.9% of scans
U140Bin 23.1% of scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
What it means
Indicates that the air quality sensor has a malfunction and there is an internal electrical…
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