Code result
P2B8B
Intake Air O2 Sensor Heater Control Circuit/Open Bank 1
Moderate severity
What it means
The control circuit for the intake air O2 sensor heater on bank 1 is open. Sensor cannot reach operating temperature.
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
Open in heater control wire
highOne of the most commonly reported causes for this code — check this first.
Open heater element
mediumA plausible cause — test and verify before replacing parts.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Related help
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