OXYGEN SENSOR FAILING TO READ, 95 LE SC

1995 Toyota Previa

Tiny

sibyllehechtel

September, 20, 2012 AT 2:53 AM

I have a 1995 Toyota Previa minivan S/C w/ check engine light that's been in the shop numerous times. They see a P0171 code, and we have replaced the MAF and it still hesitates when going up steep hills for a long time ( I live in colorado at 9,300 feet - there's a lot of hills). I Am NOT a competent mechanic -- rather, a non-mechanically inclined woman, but the shop doesn't seem to fix my car.
Could it be the ECU?
How do I find out?

Thanks, sibylle

Tiny

rivermikerat

September, 20, 2012 AT 3:29 AM

Hi Sibylle: Read through the thread. Quite a bit of diagnostic steps have been covered. It appears the culprit for one user here was a simple rubber hose had been worn through.

Tiny

smwandtribe

September, 11, 2014 AT 9:32 PM

I have exactly the same problem, but where do I locate the rubber boot or the bypass valve?

Please login or register to post a reply.

Oxygen Sensor Replacement Dodge Stratus
Oxygen Sensor Replacement Honda Civic 1996-20
Fail Your Smog Test? Fix it Fast
How to read codes Chevrolet Blazer
Code Read Retrieval/Clear
 Step by Step video GMC Yukon XL 2000-2006