P1130 code

[kristian]

My engine light is on. I got the code P1130 on my Actron scanner. I looked it up and it said oxygen sensor for cylinders 4-6. Do I need any other information when I goto the dealer to get the sensor and does anybody have instructions how to replace it.

I'm pretty new to this, I really appreciate if somebody could help me

Kristian

[Loren]

You do not have a bad sensor - that sensor is telling you where the problem is.

Your fuel/air mixture is so rich that sensing is up to its lean threshold. That means, you are idling too rich and the DME can not correct for it.

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Below Limit

Here are potential causes of a P1130:

– Incorrect signal from MAF sensor

– Fuel pressure too high

– Fuel injector leaking

– EVAP canister purge valve open

I suggest you start by cleaning the MAF. That has been covered here many many many times - so do a search and get some good tips on cleaning.

[kristian]

Thanks for the great advice. I cleaned the MAF and the engine light came off the next day. It's running much smoother now.

Kristian

You do not have a bad sensor - that sensor is telling you where the problem is.

Your fuel/air mixture is so rich that sensing is up to its lean threshold. That means, you are idling too rich and the DME can not correct for it.

P1130 Oxygen Sensing Adaptation, Idle Range, Bank 2 – Below Limit

Here are potential causes of a P1130:

– Incorrect signal from MAF sensor

– Fuel pressure too high

– Fuel injector leaking

– EVAP canister purge valve open

I suggest you start by cleaning the MAF. That has been covered here many many many times - so do a search and get some good tips on cleaning.

[flyingpenguin]

Same problem here. P1130 only, which keeps coming back even after initially cleaning and subsequently replacing the MAF with a new OEM one.

As a bad MAF should affect both sides (not just bank 2), one could argue that it the issue is caused by one of the remaining 3 potential causes (Fuel pressure too high, Fuel injector leaking, EVAP canister purge valve open).

I guess it's time to start checking the fuel injectors and fuel delivery / pressure. Any tips on DIY'ing this?

JP

[geoff]

Same problem here. P1130 only, which keeps coming back even after initially cleaning and subsequently replacing the MAF with a new OEM one.

As a bad MAF should affect both sides (not just bank 2), one could argue that it the issue is caused by one of the remaining 3 potential causes (Fuel pressure too high, Fuel injector leaking, EVAP canister purge valve open).

I guess it's time to start checking the fuel injectors and fuel delivery / pressure. Any tips on DIY'ing this?

JP

When I had a check engine light a while ago (either P1128 or P1130, but not both, can't remember which), it was only for one bank. I cleared it and the same code came back after a while. I cleaned the MAF sensor and the problem disappeared, which indicated to me the MAF had seen better days. I replaced the MAF and haven't had another CEL ever since after a few years. Keep in mind the MAF is just one piece of the whole emissions chain until the exhaust, and one side out of whack doesn't necessarily trigger a CEL for the other.