what's the first thing i need to check when my 2002 mr2 spyder "check engine" light just came on?


Asked by Nov 19, 2007 at 11:22 AM about the 2002 Toyota MR2 Spyder 2 Dr STD Convertible

Question type: Maintenance & Repair

i just bought a 2002 toyota mr2 spyder which drives GREAT!  this morning, the "check engine" light came on.  what's the first / cheapest thing i need to do, as i do not really think it's the engine at all.  thanx.

4 Answers


Have the computer scanned at your local parts store for FREE. They will be able to tell you what the CEL is indicating.


make sure your gas cap is securely on-loose cap shows as a leak in the evaporative rec overy system - most common cause is loose cap or bad gasket on gas cap

1 of 1 people found this helpful.

Oxygen sensor malfunction is a common issue, exhaust side ( right side, facing front of car from rear ). You will need a deep socket to extract the sensor and can buy these for $45 - $50 on ebay, $99 at AutoZone. I use Bosch sensors only.

4 of 4 people found this helpful.

I have the same issue with a 2002 MR2 that i JUST bought. Check engine light came on after driving for 20 minutes. Code PO155 which indicates 02 sensor. Is this easily replaced? Are there youtube videos or other instructions on how to do this repair? thanks

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