Error code
OBD2 P2273
OBD2P2273
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
O2 Sensor Signal Stuck Rich.
Severity
moderateCan be driven, but may cause long-term damage to the catalytic converter and engine if not addressed.
Summary
P2273 indicates that the heated oxygen sensor (H028) on bank 2 is sending a signal indicating the mixture is too rich, meaning there's an excess of fuel in the exhaust.
Common Causes
- Wiring issues
- Faulty H025 sensor
- High fuel pressure
- Malfunctioning injectors
- Restricted air intake
Fixes
FAQ
What does P2273 mean?
P2273 indicates that the heated oxygen sensor (H028) on bank 2 is sending a signal indicating the mixture is too rich, meaning there's an excess of fuel in the exhaust.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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