Damn ses again

[QIK KAT]

I've checked all vacum lines on both sides, all good, sprayed ele. cleaner in mas air. Could it just be a simple plug change, as much as i hate to admit the stock plugs are still in @ 43000. Truck still runs & idles great. what to do?
Thanks,
Nick

[QIK KAT]

These are the codes we pulled up

p135
p1131

[Silver_2000]

These are the codes we pulled up

p135
p1131
P0135 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1131 Lack Of HO2S11 Switch - Sensor Indicates Lean

[QIK KAT]

Does this mean i have to change the oxegyn sensor. If so , what one?

[PoorSvtman]

P0135 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1131 Lack Of HO2S11 Switch - Sensor Indicates Lean

Bank 1 = driverside

Sensor 1 =before the cat or closest the the motor

[QIK KAT]

Thanks Mike:tu:

[Mark #2]

Do you have headers? If so, it could be a header leak.

[QIK KAT]

No headers:cool:

[PoorSvtman]

probly just a sensor gone bad.....

[L8 APEX]

Bank 1 is passenger side..Those are not the lean bank codes you had previously 0171, 0174. Those are dead O2 codes either by bad senosr or blown fuse powering them.

[QIK KAT]

I'm looking in the owners guide, which fuse is :confused:

[L8 APEX]

I'd replace the O2 first the fuse powers both sides. It is a 15amp in the box under the hood toward the hinge side. It feeds trans, O2's etc...

[QIK KAT]

Thank's terry, it was blown, also i'm thinking of doing a egr delete, what's your thought's on that? besides being easier to change d/side plugs