Check Engine Light on 1999 Toyota Camry

Check Engine Light The code is P0401 and P0402. We have replaced the carbon canister, MAP, Egr Valve, Egr Module (so... f_athens, 1999 Toyota Camry, 2.2L 4 cylinder, White, GA, June 26, 2009, 14:42 The code is P0401 and P0402. We have replaced the carbon canister, MAP, Egr Valve, Egr Module (solenoid) and one other part I don't remember the name of. Now the Check Engine light is on and both codes are coming up. My Mechanic which has be graciously helping me out is now ready to throw in the towel Help...

by in White, GA on July 08, 2009
2 answers 1 comment
ANSWER by on July 08, 2009
Has your mechanic checked the basic EGR operation? Is the system allowing EGR flow into the engine? Did you pass on the articles that I posted in your previous question? I would have your mechanic read the articles, they should help to answer any questions they have about these diagnostic trouble codes, as well as how to diagnose the problems.
COMMENT by on July 08, 2009
I forgot to mention this is a Japanese built Camry..therefore some of the comments and instructions doesn't seem to apply. There has been enough differences in parts that I even had to start pointing out to parts store even though I've told them vin # begans with a J.
ANSWER by on July 08, 2009
The vacuum switching valve frequently fails. You test it for resistance and test it to see that it pases a vacuum when energized but they fail intermittently when driving. If this car has a vacuum modulator test the function of that the tests are pretty straight forward if you don't have the tests I will forward them to you. Check that the engine runs rough when full vacuum is applied to the EGR valve at idle but they are not as prone to passages plugging up as Hondas and Acuras and Mazda are.
Related Items:
...until a Toyota dealer opens up here (hopefully, within the next 12 months)? Since some of the check engine light refers to emiision problem, would the continuing driving cause damage anything big? Thanks problems, runs great etc.. 2 mornings ago (temp outside 37)after starting car, the check engine light came on and stayed on. took the car to local mechanic who dx'd the code. he then removed the...
My 2000 Camry has almost 140,000 miles on it. I've the check engine light on for about 6 months. The Toyota dealership found code P0442 as the culprit relating to the evap cannister. They quoted a ...
my '96 camry has over 225K miles on it, and the check engine light has been on for years. it runs fine, but i want to get it off now. the OBDII says it's the EGR...

Related Content