OBD-II code · Powertrain (generic, extended)
P2253 O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 1)
The Vs negative line on bank 1, sensor 1 reads above the upper threshold. Often a short to positive or a damaged ECU sensor amplifier.
Is it safe to drive with P2253?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyVs negative line shorted to positive
- PossibleInternal short in sensor
- 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, Oxygen Sensor Wiring
Related codes
- P2252O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 1)
- P2255O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 1)
- P22B4O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 2)
- P22C1O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 2)
- P2250O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 1)
- P2251O2 Sensor Negative Current Control Circuit (Bank 1 Sensor 1)
- P2254O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1)
- P2256O2 Sensor Heater Control Circuit Low Bank 1 Sensor 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.