Code result
U046E
Invalid Data Received From Exhaust Gas Sensor Module B
Moderate severity
What it means
A receiving module detected implausible data from exhaust gas sensor module B (smart wide-range O2 / lambda module). Lambda or pumping current values fail plausibility checks and are rejected.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Module internal fault or sensor input drift
highOne of the most commonly reported causes for this code — check this first.
Software version mismatch after replacement
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
Related help
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