OBD-II code · Powertrain (generic, extended)
P2242 O2 Sensor Pumping Current Circuit High (Bank 2 Sensor 1)
The pumping-current line of the bank 2, sensor 1 wide-band oxygen sensor reads above the upper threshold. Common with a short to a positive supply or a damaged sensor amplifier in the ECU.
Is it safe to drive with P2242?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPumping current line shorted to positive
- PossibleSensor internally shorted
- 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
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oxygen Sensor Upstream B2, Oxygen Sensor Wiring
Related codes
- P2239O2 Sensor Pumping Current Circuit High (Bank 1 Sensor 1)
- P2241O2 Sensor Pumping Current Circuit Low (Bank 2 Sensor 1)
- P223FO2 Sensor Reference Resistance Out Of Range (Bank 2)
- P2240O2 Sensor Pumping Current Circuit (Bank 2 Sensor 1)
- P2243O2 Sensor Reference Voltage Circuit (Bank 1 Sensor 1)
- P2244O2 Sensor Reference Voltage Circuit Range/Performance (Bank 1 Sensor 1)
- P2245O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.