2006 Corolla, P0138 Malfunction

[tonychang]

Hello all,

Just recently purchased a 2006 Corolla via used dealership in Burlington, Ontario, Canada. I have had the vehicle for approximately 1 week. The car runs fine there does not seem to be any issues, it came off of a lease from a Toyota Dealership and sold at an auction where the used dealer purchases from.

The vehicle has 73,000km on it.
VIN: 2T1BR32E96C639145

After approximately one week of flawless driving I noticed that the check engine light had come on. I read the manual and took all procedures to narrow down the problem. I was unable to successfully figure out what was wrong so I took the car back to the used dealership where I purchased the vehicle. He hooked up his tester and the error code "P0138" appeared.

His solution was to reset the code so that it would no longer show up. He told me that if it shows up again, to bring it back to diagnose the problem again. After reading and doing my research thanks to this wonderful forum I have noticed that there seems to be a lot of problems with the 2005-2007 range of Toyota's and the ECM's. Should I be worried about this? Could my vehicle be showing signs of similar problems that are linked to the ECM problems on these forums?

So let's say that the P0138 error message comes up again... is this something that is covered by warranty? If so, which warranty category would this fall under (powertrain, emissions, major emissions).... any input would be GREATLY appreciated.

Thanks.

[Slaander]

Originally Posted by tonychang

Hello all,

Just recently purchased a 2006 Corolla via used dealership in Burlington, Ontario, Canada. I have had the vehicle for approximately 1 week. The car runs fine there does not seem to be any issues, it came off of a lease from a Toyota Dealership and sold at an auction where the used dealer purchases from.

The vehicle has 73,000km on it.
VIN: 2T1BR32E96C639145

After approximately one week of flawless driving I noticed that the check engine light had come on. I read the manual and took all procedures to narrow down the problem. I was unable to successfully figure out what was wrong so I took the car back to the used dealership where I purchased the vehicle. He hooked up his tester and the error code "P0138" appeared.

His solution was to reset the code so that it would no longer show up. He told me that if it shows up again, to bring it back to diagnose the problem again. After reading and doing my research thanks to this wonderful forum I have noticed that there seems to be a lot of problems with the 2005-2007 range of Toyota's and the ECM's. Should I be worried about this? Could my vehicle be showing signs of similar problems that are linked to the ECM problems on these forums?

So let's say that the P0138 error message comes up again... is this something that is covered by warranty? If so, which warranty category would this fall under (powertrain, emissions, major emissions).... any input would be GREATLY appreciated.

Thanks.

P0138 O2Sensor Circuit High Voltage (Bank #1 Sensor #2)

looks like is your o2Sensor not the ECM

[tonychang]

Originally Posted by Slaander

P0138 O2Sensor Circuit High Voltage (Bank #1 Sensor #2)

looks like is your o2Sensor not the ECM

Thanks so much for your reply... How major of an issue is this? Is it dangerous to drive with this problem?
Is this covered by warranty? If so which warranty category does this fall under? Also how easy is this to fix, and if it's not covered by warranty I definitely will not be taking it the Toyota dealership since I do not want to get ripped off.

[Slaander]

Originally Posted by tonychang

Thanks so much for your reply... How major of an issue is this? Is it dangerous to drive with this problem?
Is this covered by warranty? If so which warranty category does this fall under? Also how easy is this to fix, and if it's not covered by warranty I definitely will not be taking it the Toyota dealership since I do not want to get ripped off.

I don't really think o2 sensor is under warranty at your mileage, but sometimes just need to clean it that is all to fix the obd code. but you can always change a new one, I think Napa sells them maybe around $70 +/-

Bank 1 = at the engine (usually in the exhaust manifold)
Bank 2 = down stream of the catalytic converter

you can also find how to clean o2 sensor in this

http://www.ehow.com/how_4809599_clean-o-sensor.html

Comprehensive Coverage - 3 years or 60,000 km
This warranty includes 24 hour Roadside Assistance and other benefits, as well as
coverage of repairs on any part of the vehicle that is defective in material or
workmanship under normal use and maintenance. Different warranties apply
to original tires.
Powertrain Components - 5 years or 100,000 km
This warranty covers repairs to powertrain components that are defective in material
or workmanship under normal use and maintenance.
Major Emission Control Components - 8 years or 130,000 km
This warranty covers repairs to specified major emission components that are
defective in material or workmanship under normal use and maintenance.
Corrosion Perforation - 5 years unlimited distance
Any sheet metal found, under normal use, to have developed a perforation from

corrosion due to defects in material or workmanship.

[tonychang]

Thanks a lot for your reply. I think I will replace it if it's that cheap. Only if the error pops up again, if not then looks like I am good.

[Slaander]

Originally Posted by tonychang

Thanks a lot for your reply. I think I will replace it if it's that cheap. Only if the error pops up again, if not then looks like I am good.

You are welcome! Xie Xie

[jeff1000]

There's a TSB for this CEL.

http://www.toyotapart.com/M.I.L._ON_...T-EG043-07.pdf

The TSB is for the US but it may apply to Canada.
Go to the stealership with your VIN and ask the service department for the maintenance records for your car. They shouldn't charge you for this.

The A/F sensor and the oxygen sensor should be checked before replacing any parts.

The TSB reports something like this:

check A/F sensor - OK
check Oxygen sensor - OK

If both are OK then replace ECM

To check the sensors you need a scan tool and/or multimeter.


>

[kukuyi]

did you fix your 2006 corolla problem finally?

[kukuyi]

did you fix your 2006 corolla problem finally? p0138?

[AJ0319]

hey i am having the same issue. was wondering where the o2 sensor is located so i can change it out before i change the ECM. thanks for you help