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Amedee
Amedee, Saturn Technician
Category: Saturn
Satisfied Customers: 21666
Experience:  ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
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I need info on my 05 Saturn Vue check engine light scan codes:

Resolved Question:

I need info on my '05 Saturn Vue check engine light scan codes: P0137, _0138, P0139, P0420, P2270, P2271
Submitted: 2 years ago.
Category: Saturn
Expert:  Amedee replied 2 years ago.
Hello!

How does the vehicle run?

If you clear the codes, which code comes back first?
Customer: replied 2 years ago.

Vehicle seems to run fine. Has been lit for a few months...I do not know how to clear codes.
Expert:  Amedee replied 2 years ago.
SO your just looking for information on these codes?
Customer: replied 2 years ago.

Yes, please.
Expert:  Amedee replied 2 years ago.
What size engine do you have?
Customer: replied 2 years ago.
2.5L V6
Expert:  Amedee replied 2 years ago.
You mean 2.2 liter?
Customer: replied 2 years ago.

Husband says 2.5L...but I will defer to your
knowledge...
Expert:  Amedee replied 2 years ago.
They only make a 2.2 liter engine and a 3.5 liter engine. One is a 4 cylinder and one is a 6 cylinder engine.
Customer: replied 2 years ago.

Okay - just got a response from family. it is a 3.5L 6-cylinder
Expert:  Amedee replied 2 years ago.
Excellent!

P0137 is Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage
P0138 is Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
P0139 is Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response
P0420 is a converter efficiency code.
P2270 is Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Lean
P2271 is HO2S Signal Stuck Rich Bank 1 Sensor 2

It really sounds like you might just have a bad oxygen sensor after the converter on bank 1. Just be sure the wiring to this o2 sensor checks out ok and that there is power to this sensor with the key on engine running. If so, replace the o2 sensor and clear all of the codes using a scanner or by disconnecting the battery. Chances are this will do this trick.

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Thanks in advance!

Best Regards

AMEDEE
Amedee, Saturn Technician
Category: Saturn
Satisfied Customers: 21666
Experience: ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
Amedee and 4 other Saturn Specialists are ready to help you

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