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Posted on Nov 12, 2010
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Engine light comes on with code p1135 control fuel air metering. how do i fix this?

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Brad Kirby

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  • Posted on Nov 12, 2010
Brad Kirby
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P1135: A/F Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

Your first O2 sensor is not getting heated either because the wiring to the sensor is bad or the heater inside the sensor is bad. If you have a four cylinder this would be the only O2 sensor you have before the catalyst. I would just replace the sensor, clear the code, and see if it comes back.

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2002 toyota le 29,780 Miles check light on during driving code p1135

Code p1135 is a code for an Air/Fuel sensor (oxygen sensor). Bank 1 sensor 1. IT comes up when their is a problem with air/fuel mixture in the engine. It would be anything from a blocked air cleaner, faulty or fouled spark plugs to a blocked exhaust pipe/catalytic convertor. I would get these checked out, and if they are all fine the sensor its self or sensor circuit may have failed, requireing replacement. With your low miles, hopefully this maybe covered under warranty if it is the sensor.
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O2 malfunction P1135. Please what do i need to buy to replace ? Can I do this myself or will have to let an expert do it. i would be very grateful if you could tell me what EAXACTLY that I need to buy...

The P1135 code on your Toyota is Air fuel ratio sensor - heater circuit malfunction. Basically the problem there will be with the air/fuel ratio sensor (on other vehicles it is refered to as an O2 oxygen sensor), or the wiring/connectors leading to it. It could also be a problem with a fuse or relay on the heater circuit. Again, not a real difficult problem to solve.

just fixing the P1135 code will not cause the check engine light to stay off because there are other unrelated codes. If the code P1135 was causing the other problems then perhaps fixing that code would fix the others, but that's not the case here. The reality is you'll need to have all the problem areas looked at (IAT sensor, MAF sensor, Air/fuel ratio sensor) and repaired in order for your engine light to stay off. Normally if there are codes stored a vehicle cannot pass inspection. I would get a second opinion from another local mechanic as what you've been told may not be 100% correct.

Good luck.
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Error code P 1135. what part needs to be replaced?

P1135. Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1).

The P1135 code on your Toyota is Air fuel ratio sensor - heater circuit malfunction. Basically the problem there will be with the air/fuel ratio sensor (on other vehicles it is refered to as an O2 oxygen sensor), or the wiring/connectors leading to it. It could also be a problem with a fuse or relay on the heater circuit. Again, not a real difficult problem to solve.

Now, to specifically answer your question. I'm not familiar with the inspections in New Jersey, however just fixing the P1135 code will not cause the check engine light to stay off because there are other unrelated codes. If the code P1135 was causing the other problems then perhaps fixing that code would fix the others, but that's not the case here. The reality is you'll need to have all the problem areas looked at (IAT sensor, MAF sensor, Air/fuel ratio sensor) and repaired in order for your engine light to stay off. Normally if there are codes stored a vehicle cannot pass inspection. I would get a second opinion from another local mechanic as what you've been told may not be 100% correct.

Good luck.
4helpful
2answers

I took my Toyota to autozone because my check

oxygen sensor bank 2 sensor 1
do you have a 6 cylinders engine?
this sensor is on the rear bank ( next to the fire wall ) before the cat
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My check engine light is on and I received code P1135, Manufacturer Control Fuel Air Metering is the defintion of the code. What parts do I need to get to fix problem myself?

Not sure where you got that definition for that code but this is what it is and means with possible causes for whichever motor you have:

Trouble Code: P1135 (2.4L L4 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - I4 - P1135, P1155


Trouble Code: P1135 (3.0L V6 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - V6 - P1135
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Check engine light is on

P1135 bank 1 sensor 1 is your air/fuel sensor upstream (between manifold and engine on the passenger side). It cost about $179 at most reputable auto parts store. You'll want to run the engine for two minutes before attempting to take off the nuts also be careful not to touch the manifold as it will be hot (use a 12mm box end wrench and or a pair of needle nose vise grips or lastly a dremel tool to grind them off). unplug the old sensor plug the new in and install. pull your positive cable off your battery for 5 minutes and then re-connect. your check engine light should be gone. allow your truck to idle for a few minutes and then take a drive. good luck!
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