p 1151 codeg help with this

[keith wallace01ST]

A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when fuel control system no longer detects switching for a calibrated amount of



I GOT A P1151 CODE



i changed the part with the elbo piece by the rad hoge



i amd running a performance tune from in my 2001 trac



any other ideas



keith

 

[keith wallace01ST]

P1151 - Lack of HO2S-21 Switch, Sensor Indicates Lean

 

[EddieS'04]

P1151 - Lack of HO2S-21 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130



P1130 - Lack of HO2S-11 Switch, Fuel Trim at Limit The HEGO Sensor is monitored for switching. The test fails when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit. Electrical:

Short to VPWR in harness or HO2S

Water in harness connector

Open/Shorted HO2S circuit

Corrosion or poor mating terminals and wiring

Damaged HO2S

Damaged PCM

Fuel System:

Excessive fuel pressure

Leaking/contaminated fuel injectors

Leaking fuel pressure regulator

Low fuel pressure or running out of fuel

Vapor recovery system

Induction System:

Air leaks after the MAF

Vacuum Leaks

PCV system

Improperly seated engine oil dipstick

EGR System:

Leaking gasket

Stuck EGR valve

Leaking diaphragm or EVR

Base Engine:

Oil overfill

Cam timing

Cylinder compression

Exhaust leaks before or near the HO2S(s)

A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching

 

[Andy Cabrera]

I was throwing this code it turned out to be a loose O2 wire connection to the ECU.

 

[keith wallace01ST]

where is this wire

could it be with the tunning?



any spots i should start out checking



Thanks for the help guys? i will go look for this wire?



would a engine diagonosis help?

 

[Andy Cabrera]

It very well could be a result of tuning. Did you make mods to the ECU or settings?



The affected O2 sensor for a code 1151 is

bank 2, driver's side.

The wire color is Red/Black.

It is connected to pin 87 on your ECU

which is on the passenger side firewall in the engine compartment.



BTW if it comes up

the corresponding code for the passenger side is 1131

Bank1

wire color Grey/ Light Blue

Pin 60 on ECU



Good luck!

 

[scott degroot]

See my response in your original post

 

[keith wallace01ST]

i have done some mod with a performance tune but i have been running it for a year i also did the mod from tod with my true cold air i have not check my air filtre in a year could this also be the issue would dirty air filter cause problem as well



i am goig to put in a new o2 senssor in this weakend.



this week the trac wanted to stall i was to footing it in trafic



i will check the wires as well



finger crossed

 

[keith wallace01ST]

amazing when you cllean the true cold air filtre trac run great lol i am so silly

 

[keith wallace01ST]

ok thank all for the help it turns out it is the o2 sensor took into candaian tire and they hooked it upto a machine.



But then this weakend i blew my pinion seal and the u joint the trac has 15700 after lol