Code result
P22BB
O2 Sensor Reference Voltage Circuit/Open
High severity
What it means
The reference voltage line for the wide-band O2 sensor on bank 2 sensor 2 is open. The reference is used as the floating mid-point for the pumping cell.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Open reference voltage line
highOne of the most commonly reported causes for this code — check this first.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Cracked solder joint inside the module or sensor
lowLess common, but worth ruling out after the more likely causes.
Related help
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