cost to change O2 sensors

[Shep426]

Originally Posted by studiculous

If the front sensor is bad, it shuts off VSC and 4WD.

Ok, but where in the OP's info is this stated as the reason for replacing the sensors, maybe this is not the issue. No codes, no symptoms.

[techguy]

my VSC and 4WD are shut off when the CEL comes on

Originally Posted by studiculous

If the front sensor is bad, it shuts off VSC and 4WD.

[techguy]

when car sits for a couple of days in humid weather, CEL, VSC and 4WD comes on. error code indicates bad ECM but that is misleading as the exact code has been debugged by someone's experiences on the internet as a bad O2 sensor, error goes away after one day. problem does not occur often which makes me confident the ECM should not be replaced for over $1000.

also symptoms are extremely poor MPG and car has 115K miles with original sensors.

Originally Posted by Shep426

Ok, but where in the OP's info is this stated as the reason for replacing the sensors, maybe this is not the issue. No codes, no symptoms.

[ARK]

Don't rely on a diagnosis with a single incident with the MIL light. If the light emits and a test of the OBDII indicates O2 sensor, try a oxygen safe carb cleaner in the throttle body, clean the TB and enough cleaner to smother the O2sensor(s). You just may buy some time and distance. But if your MPG is suffering you may have to bite the bullet. Getting at least 100,000 miles on a O2 sensor is good life, heated or not.

[techguy]

I just don't want to overpay for replacing the sensors that's all. I want to get informed about what a realistic cost to do the job is so I don't get taken advantage of.

Originally Posted by ARK

Don't rely on a diagnosis with a single incident with the MIL light. If the light emits and a test of the OBDII indicates O2 sensor, try a oxygen safe carb cleaner in the throttle body, clean the TB and enough cleaner to smother the O2sensor(s). You just may buy some time and distance. But if your MPG is suffering you may have to bite the bullet. Getting at least 100,000 miles on a O2 sensor is good life, heated or not.

[Shep426]

Pcm has at least a 7/70 warranty or 8/80 in some states, that said, it would be very unusual for that to fail.