2008 Toyota Yaris Engine warning light

Tiny
DANUTA
  • MEMBER
  • 2008 TOYOTA YARIS
  • 4 CYL
  • 2WD
  • MANUAL
  • 44,700 MILES
In May the gas tank was filled by accident with the Diesel Fuel. The tank was half full at the time.
The whole system has been flushed at the Dealer.
The car was performing OK, however yesterday the "Engine warning Light" came on.
After inspection, the dealer suggests replacing:
catalytic converter
02 sensor
4 fuel injectors
spark plugs.
they also suggest that there might be further damage to the engine, not known at this time.
Is all that really necessary? Or is the dealer taking advantage of me?
What would you suggest as best option?
This is terribly expensive, and I can't afford it at all.
Thursday, August 19th, 2010 AT 4:28 PM

4 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi Danuta,

What are the trouble codes retrieved?

I don't think it is necessary to replace all the components as it is not possible for all of them to fail at once.
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Friday, August 20th, 2010 AT 9:10 AM
Tiny
DANUTA
  • MEMBER
  • 2 POSTS
Thank you for the reply.
According to the invoice they found the following cause: P0300, 301, 302,303, 304, P0240.

Danuta
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Monday, August 23rd, 2010 AT 6:15 AM
Tiny
KHLOW2008
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  • 41,814 POSTS
P0300 to P0304 are misfiring codes and it could be due to bad compression or spark plug related issues. Get them checked/replaced if necessary.

I believe you mean P0420 which indicates the catalytic converter could be bad.

Get the misfiring codes resolved first and retest. The P0420 could be a faulty catalytic converter or a by-product of the misfring codes.
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Monday, August 23rd, 2010 AT 10:28 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
You could probably get by with O2 sensors and CAT and plugs, fuel filter, injectors should not be permanently damaged.

You would need to drain tank, flush fuel system after removing injectors. In any case, it will not be cheap.
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Sunday, November 21st, 2010 AT 1:49 PM

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