What is a code P1273?
Error Code P1273 is described as Air Fuel Ratio Sensor 1 Bank 1 Lean Shift Monitoring. This refers to a lean condition due to too much oxygen, usually caused by a vacuum leak, fuel pressure, dirty MAF (Mass Airflow sensor), or defective or dirty injectors.
What is the dreaded P1273 code on Nissans?
The dreaded P1273 code. The P1273 code is a hen that lays golden eggs for Nissan dealerships, repair shops as well as parts dealers since it is so vague in the fault .Not sure how the DOT can allow such a vague code which cannot even pinpoint a problem in the vehicle.
What does P1273 mean on a pre-cat?
If you have a P1273 code, it has nothing to do with the pre-cat at all. At least that is what i read and search from. If you look up the service bulletin, the first thing come up is A/F ratio bank 1, which is the 2nd o2 sensor. I got the same code few weeks ago.
What to do if your Nissan p0402 comes back?
To keep the P0402 from coming back I installed one of those screw in spark plug non-fouler type O2 sims into the rear and installed the original O2 on top of it. 10,000 miles and has not come back. With a scan tool the rear O2 is pegging around .8volts while cruising.
What are the possible causes of Nissan P1273?
P1273 NISSAN 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.
If you have a P1273 code, it has nothing to do with the pre-cat at all. At least that is what i read and search from. If you look up the service bulletin, the first thing come up is A/F ratio bank 1, which is the 2nd o2 sensor. I got the same code few weeks ago.
What is the air fuel ratio sensor P1273?
P1273 Nissan Description. The Air Fuel Ratio (A/F) sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element.
What is the OBDII code for a Nissan Maxima?
Nissan Service Bulletin OBDII Code P1273 There are factory service bulletins for the following Nissan models: 2004 Maxima (A34) with 5 speed A/T only 2004 Quest (V42) with 5 speed A/T only Nissan Factory Service Bulletin OBDII Code P1273 2004 Maxima (A34) with 4-speed A/T and 6-speed M/T 2004 Quest (V42) with 4-speed A/T