help with diagnostic code

[potentialowner]

I searched the forum, but didn't find any specific help.

My check engine light came on last week. Autozone plugged in their computer and it gave diagnostic code p2195 and p0138. I some some mention on the forum of an a/f sensor and a o2 sensor. Can someone point me in the right direction to order the correct part and any install instructions? Does the part have to be ordered from Toyota? Is there any benefit?

2007 Camry, 90k miles.

[blkavalon]

you can buy both the airflow sensor and the O2 sensor from Autozone. there is mass air flow sensor cleaner in many parts stores, before replacing the airflow sensor try cleaning it.

[njerald]

Below are the possible trouble areas...........just follow the diagnostics in your Service manual..

P0138 - Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

1. Short in HO2 sensor (sensor 2) circuit
2. HO2 sensor (sensor 2)
3. ECM internal circuit malfunction

P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

1. Open or short in A/F sensor (sensor 1) circuit
2. A/F sensor (sensor 1)
3. A/F sensor heater (sensor 1)
4. Engine room J/B (EFI relay)
5. A/F sensor heater and EFI relay circuits

[toyomoho]

Might be covered by a TSB, see link below:

TSB-0074-08 - 5/27/08 - MIL ON DTC P2195, P0138, P0171, or P0031

[njerald]

Originally Posted by toyomoho

Might be covered by a TSB, see link below:

TSB-0074-08 - 5/27/08 - MIL ON DTC P2195, P0138, P0171, or P0031

Yes, it would, if he had about 54,000 less miles on his car.