P1273 Nissan
P1273 Nissan - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1
Possible causes
- Faulty Air fuel ratio (A/F) sensor 1 Bank 1
- Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1
- Fuel pressure
- Faulty Fuel injector
- Intake air leaks
- Faulty Air Flow Meter
Most probable is you have a bad heater in your upper bank 1 O2 sensor. Replace all of your O2 sensors.
Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgP7CTD8
Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgOwiMU8
SOURCE: Understanding trouble codes for my vehicles
On the Nissan that code means you have a short in the knock sensor circuit or you just need a new knock sensor.
SOURCE: meaning of p1126 manufacturer control fuel air
think it means the mass air flow in the intake pipe not reading correct
SOURCE: my Nissan Murano 2004 is getting trouble code
that is a code for the A/F sensor. that is a air/fuel ratio sensor aka front 02 sensor. used to be called front 02 sensor, but nowadays they call them A/F sensor.
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Lean Shift
Possible Causes:
Air Fuel Sensor (AFS) is damaged or has failedAir Fuel Sensor (AFS) heater is damaged or has failedIntake air leaks somewhere in the engine or intake areaFuel system problem (low fuel pressure, restricted injectors)
1,578 views
Usually answered in minutes!
×