P1273 – 2005_NISSAN_MAXIMA

Code : P1273
Description : P1273 2005 NISSAN MAXIMA Air Fuel Ratio Sensor 1 Bank 1 Lean Shift Monitoring
Possible causes :
– Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
– Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
– Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
– Fuel pressure
– Faulty Fuel injector
– Faulty Air Flow Meter
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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