Hey guys this was the code that came on. I reset it and it came on again after a couple days. I do have aftermarket headers and hfc. What do you guys think could be the problem.

 

P1283
Search Bulletins/Recalls for P1283

Trouble diagnosis name: Air fuel ratio (A/F) sensor 1 (Bank 2) lean shift monitoring

Component Description

The 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.

The sensor is capable of precise measurement λ= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide λ range (0.7 < λ < air).

The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance.

An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at λ = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F).

DTC detecting condition:

•The output voltage computed by ECM from the A/F sensor 1 (Bank 2) signal is shifted to the lean side for a specified period.
Possible cause:

•Air fuel ratio (A/F) sensor 1
•Air fuel ratio (A/F) sensor 1 heater
•Fuel pressure
•Fuel injector
•Intake air leaks

 

hope that helps. U coming to the meet june 11? (la canada)

 

thanks man that really helped. La Canada is too far for me bro!!!

 

Trouble code for sensor 1 is not good (sensor 2 would be less concerning)… sensor 1 is at the exhaust manifold, 2 is at the cats… your a/f is going to be whack until you get it resolved… I’m surprised you don’t have symptoms – is the car running as normal? With sensor 2 its not much of a problem.

 

yea my a/f is super whack. Im getting really bad mpg, and there is some back fire while idling the car as well. Damn i really need to get this fixed!!

 

Yep, all symptoms of sensor 1 failure. Those aren’t cheap either and not as easy to install as sensor 2 (you don’t even really need sensor 2).

 

ummm i think my o2 sensors might be loose or damaged!

 

Hey do you think this code came up because of my tune?

 

I doubt its from the tune... might have been damaged at time of header install... who installed the headers?

 

A shop called tuning technologies. so im guessing the 02 sensors are facked. Ill just go to a shop tmrw and diagnose the problem.

 

Do know anyone with an ODBII datalogger? If so, you can log the response and operation of all the 02 sensors and see if it's really the problem (most likely is).

 

Thanks man, thats sounds like a good idea.

 

He means “OBDII” as in on board diagnostic – not ODB… anyway, since you have Osiris, the Cipher cable will tell you what you need to know…

 

hey guys, I just saw this thread and I'm experiencing a similar issue. I have a slow reading O2 sensor on my bank 1 header, it's been that way for some time. I went by the dealer and they said it'd be $600 to fix, and based on the fact that that's more than two monthly payments for the damned car, I'm experiencing a strong desire to do it myself.

Does anyone have the part number for this oxygen sensor so I could try to order it online? I know the part alone is $250 from the dealership, and I'd rather try to find it cheaper on the interwebz. Thanks!