Error code
OBD2 P2628
OBD2P2628
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
O2 Sensor Pumping Current Trim Circuit High.
Severity
moderateCan drive but may experience reduced fuel efficiency and emissions issues.
Summary
P2628 indicates that there is an issue with the pumping current trim circuit of the heated oxygen sensor (HO2S) on bank 1, which could be due to a wiring problem.
Common Causes
- Wiring short to positive
Fixes
- Repair or replace the faulty wiring.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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