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Check engine light is on?

Tiny
PAUL E. BAKER
  • MEMBER
  • 1 POST
  • 2006 FORD TAURUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 89,900 MILES
I was driving home form LA to Las Vegas when the engine lite went on. I stopped to see what the matter was and it wouldn't idle. As long a RPM's are high it doesn't stall.
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Saturday, October 24th, 2020 AT 11:19 AM (Merged)
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First thing you need to do is have the codes read, Autozone does it free, Post the results with the code number(s). Even if the service engine light is not on, there should be freeze frame data stored.
If it won't make it to Autozone, buy a cheap scanner, they can be had for 30-40 dollars, a good investment, since they cover all cars sold in the USA from 96 on.
If the light is blinking, it means engine misfire, possible damage to the converter. Service it right away!
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Saturday, October 24th, 2020 AT 11:19 AM (Merged)
Tiny
KOY.LILES
  • MEMBER
  • 4 POSTS
  • 2006 FORD TAURUS
  • 135,000 MILES
Giving code 430, have replaced o2 sensor on 2 bank, repaired exhuast leak at flex coupling. State inspection shows cat heater not ready and egs not ready
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Is the trouble code still present?
After repairs and resetting the computer, it requires some running time before the various monitors becomes ready.
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KOY.LILES
  • MEMBER
  • 4 POSTS
After all repairs were done and the endine light reset while driving the car the engine light came back on with the same code. What else could be the problem? What else could I check?
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The code is for catalyst efficiency below threshold and usually it means a bad catalytic converter for bank 2.
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KOY.LILES
  • MEMBER
  • 4 POSTS
Thank you. Would it be wise to have a complete electronic diagonic test ran on the vehicle noting the problems? Would you recommend that I change just the cat or would you recommend other parts with the cat?
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
DTC P0430: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 2)

Description:

Indicates the bank 2 catalyst system efficiency is below the
acceptable threshold.

Possible Causes:

a) Use of leaded fuel
b) Damaged heated oxygen sensor (HO2S)
c) Out of range engine coolant temperature (ECT) sensor
d) High fuel pressure
e) Damaged exhaust manifold
f) Damaged catalytic converter
g) Oil contamination
h) Cylinder misfiring
i) Downstream HO2S wires improperly connected
j) Damaged exhaust system pipe
k) Damaged muffler/tailpipe assembly
l) Retarded spark timing
m) Leaking fuel injector

Check through the above and note if anyting is out of specs, starting with the easiest and if none found then you would have to replace the catalytic converter.
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KOY.LILES
  • MEMBER
  • 4 POSTS
Thank you very much for all the advise it makes my descion to have the complete diagnoic test ran.
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You're welcome.
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Saturday, October 24th, 2020 AT 11:20 AM (Merged)
Tiny
FLAVIOSALI
  • MEMBER
  • 1 POST
  • 2006 FORD TAURUS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
I have a 2006 Ford Taurus with 78,000 km which uses a regular 87 octanes gasoline. From time to time the "check the engine" light turns on. My mechanic checked the car with the tester and the diagnosis was "multiple misfire 1,000 km ago". The light turned on just 50 km before I went to the mechanic. He told me that this was not a serious problem but rather an usual behaviour in Ford cars?. The car drives and run normally all the time and then suddenly the check the engine light turns off. This has happened 4 or 5 times in the last 6 months(11,000 km mileage).
Is it safe to drive the car and don't take care of this warning light?

Thanks,

Flavio Salinas
Edmonton/AB, Canada
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Saturday, October 24th, 2020 AT 11:23 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
The reason the light is coming on is because there is a problem. It isn't common for Fords to have a misfire unless there is an ignition problem, electrical problem, or it is in need of a tune up.

Please explain what is happening, have the computer rescanned, and let me know what the code is. Chances are it needs a tune-up or some other simple item.
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Saturday, October 24th, 2020 AT 11:23 AM (Merged)
Tiny
LOUIS584
  • MEMBER
  • 1 POST
  • 2006 FORD TAURUS
  • 114,000 MILES
When I connect my code reader and turn the ignition on, the code reader says linking then fails. It appears the code reader can't read the codes. Horn fuse is ok, if thats the fuse used for the hookup.
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Saturday, October 24th, 2020 AT 11:23 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test fuse no.18 10amp in the battery junction box input power for the computer
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Saturday, October 24th, 2020 AT 11:23 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Are you sure the scanner is good? Does it work on another vehicle? Also, many code readers only read engine codes. This could be a different code for the transmission or other component.
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Saturday, October 24th, 2020 AT 11:23 AM (Merged)

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