OBD-II code · Powertrain (generic, extended)
P2630 O2 Sensor Pumping Current Trim Circuit Low Bank 2 Sensor 1
The wide-band trim resistor circuit on bank 2 sensor 1 reads low. Air-fuel feedback gain on bank 2 is wrong, causing rich or lean offsets.
Is it safe to drive with P2630?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyShort in the calibration trim resistor
- PossibleWater intrusion in the sensor connector
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Oxygen Sensor Wideband B2s1, Sensor Calibration Resistor, Wiring Harness
Related codes
- P2627O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 1
- P2C63O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 3
- P262DSensor Reference Voltage G Circuit Low
- P262ESensor Reference Voltage G Circuit High
- P262FSensor Reference Voltage G Circuit Range/Performance
- P2631O2 Sensor Pumping Current Trim Circuit High Bank 2 Sensor 1
- P2632Fuel Pump B Control Circuit / Open
- P2633Fuel Pump B Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.