p1131

[bholloway16]

My engine light came on and its reading p1131. I took the maf off and clean it and reset the the light and it came back on reading the same thing. I was @ advance auto ...Thank you in advance for the help

[mrjones]

Isn't that an oxygen sensor code?

[Egon Spengler]

This is what I got when googled

P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1

[bholloway16]

Computer is read ing p1131 manufacturer control fuel & air metering

[Zack]

Have you done any work to the engine recently?
If so what was it?

[bholloway16]

Long story dont wanna talk about it .....The engine was out the car and reinstalled. Heads was off

[bholloway16]

They took the engine out bc they said i needed a new engine bc the wasn't running . The look up on the internet and said it had bad head on mararuder/aviators and didnt chk my car . So they took the engine out bc they said it was easier to replace the motor. After they took the motor they found out the front cat on the passenger side was bad crush and stopping the exhaust from existing so they replace the valve seals and put it back together.

[Egon Spengler]

They took the engine out bc they said i needed a new engine bc the wasn't running . The look up on the internet and said it had bad head on mararuder/aviators and didnt chk my car . So they took the engine out bc they said it was easier to replace the motor. After they took the motor they found out the front cat on the passenger side was bad crush and stopping the exhaust from existing so they replace the valve seals and put it back together.
Wooooow... I am shocked... That sucks dude... I would be rip s*** if they pulled my motor for a bad cat!

[Hadamustang1]

They took the engine out bc they said i needed a new engine bc the wasn't running . The look up on the internet and said it had bad head on mararuder/aviators and didnt chk my car . So they took the engine out bc they said it was easier to replace the motor. After they took the motor they found out the front cat on the passenger side was bad crush and stopping the exhaust from existing so they replace the valve seals and put it back together.


Dey do stuff kinda strange back there in da hills of SC... :beatnik:

[Egon Spengler]

Does the car seem to run alright? How many miles have you driven since the motor was put back in?

[bholloway16]

The car is running find . I got it back last thursday and drove it all weekend (200 miles). The olyn problem i notice was the smell of gas fumes inside the car and the engine light code p1131.

[RF Overlord]

I found this with a little noodling on teh interwebs:

"DTC P1131 indicates the system is correcting RICH for an overly LEAN condition. The Heated Oxygen Sensor (HO2S) voltage is less than 0.45 volts. This is usually due to a vacuum leak after the MAF. It can also be caused by a bad PCV valve or PCV system hose.

It can also be caused by low fuel pressure or a plugged injector."

The fact that you get "gas fumes" is a clue...

[Brian H]

I took off all 4 cats and am getting the same codes and then some. Runs fine, but i no i have to get it Dyno tuned for sure.

[rookie1]

I found this with a little noodling on teh interwebs:

"DTC P1131 indicates the system is correcting RICH for an overly LEAN condition. The Heated Oxygen Sensor (HO2S) voltage is less than 0.45 volts. This is usually due to a vacuum leak after the MAF. It can also be caused by a bad PCV valve or PCV system hose.

It can also be caused by low fuel pressure or a plugged injector."

The fact that you get "gas fumes" is a clue...

plus 1 on the vacuum leak.

[SpartaPerformance]

I agree check for any leaks in the intake, PCV and EGR systems.

[bholloway16]

I checked for vac leak and cant find any. I did have all four of my cats removes so maybe thats the problem. Now my i think my tranny is gone. I was drive and it started slowing down and want move. i check the fluid and it do smell burnt. I just came back off of a 200 miles road trip yesterday and was going to the store today . wow this car is to much ....

[SmokdMercRauder]

Not good..Your trans is probably shot/ burned up..Is the fluid at the correct level? And usually If it's a vacuum leak pending on where it's leaking from.. It will throw a code for both banks of the engine(bank1/bank2 more like p0171, p0174)..Have you or someone else been able to monitor the o2's??