Has anyone had this issue before? What are some common solutions? Can anyone help point me in the right direction for the next step to take? Thank you!
This is almost always a failed heater circuit in the O2 sensor. Replace the sensor, clear the code. If the code comes back, we'll know it has a vehicle wiring problem. It is helpful to know that this sensor performs no important function. You could cut it from the vehicle and it would not effect performance or operation in any way at all. This sensor is only there to determine if the catalyst is work and doesn't affect engine operation. The sensor only operates when hot and since it takes longer to heat up on its' own, it has an electrical heater to help it operate faster. It is one of those things that you have to determine if the expense of repair is worth not looking at the 'check engine' light since it has no bearing on the safe operation of the vehicle.
SOURCE: idle malfunction
You need to replace your idle air controller (IAC). IAC basically opens and closes the throttle at idle so it stays at constants RPM. Hope this helps. Thanks for an honest rating and for using FixYa.
SOURCE: I have a 1999 Subaru Outback Impreza Sport. The
If you have any of the large chain auto parts stores in your area, call them and ask if they do free scans; most do.
If Subaru has maintained the same procedures for a while, and you have checked fluids, etc., you can try resetting the light via the ignition switch:
-Turn on the ignition (don't start)
- switch it rapidly between the 'ignition on' and 'ignition off' positions three times.
If the error has cleared itself (not uncommon), the check light will reset. If the problem is still present, it will either stay or come back on.
Our Su has done this a couple of times and with the scanner we have on hand, there was never any particular repeated problem.
Just a computer glitch/hiccough -
SOURCE: 97subaru impreza outback sport wagon 2.2 1234
check you ecu. same problem happen to me in an izuzu rodeo. I let my fuel get to low and it sucked dirt into the filter and messed with that and it set off a code for the ecu and messed it up but if i had just replaced the ecu first i wouldnt have had to change the injectors or anything.
SOURCE: I'm getting a P 1133
The definition of Diagnostic Test Code (DTC) P1133 = "FRONT OXYGEN (A/F) SENSOR HEATER CIRCUIT HIGH INPUT"
Please note that DTCs (A.K.A. "fault codes") NEVER tell you what parts to replace.
The DTC here is telling you which CIRCUIT is malfunctioning. The circuit must be diagnosed to find the exact CAUSE of the malfunction.
The possible causes of this DTC are:
> Battery short circuit in harness between Engine Control Module (ECM) and front oxygen (A/F) sensor connector
> Faulty ECM
Please also note that this is NOT a typical O2 Sensor circuit. This is a 6-pin Air/Fuel Ratio sensor. Proper scan tool and datalink interface equipment is REQUIRED to properly diagnose these circuits.
Where the parts are located:
The A/F sensor is located in the exhaust pipe in front of the catalytic converter. The ECM is located Under the carpet in the passenger front foot-well area. The circuits are located between the two.
Please also Review this article:
What Else Could Be Wrong?
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