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Old 03-01-2008, 02:57 PM   #1
6SPD98
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Default PCM...Code P0420

Got a "check engine light".... 1/2 hour after I got the car inspected, lucky it didn't happen on the way to the inspection station.

Looked up the code and it says,"System Low Efficiency Bank 1"
Does this mean my car is getting as tired as I am?
Car only has 188,600 miles on it.
Thanks
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Old 03-01-2008, 06:46 PM   #2
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You better take it to the doctor.
The Vette Doctor that is
& bring soup
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Old 03-01-2008, 06:54 PM   #3
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Old 03-01-2008, 07:49 PM   #4
Mr. Lucky
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P0420 is a catalyst system code. Bank 1 is the driver side. The PCM compares the readings between the front O2 sensor (forward of the catalytic converter) and the rear sensor (after the cat). If it doesn't see much difference... "low efficiency." It could be just an exhaust leak, but with 188.6K on the odometer, it's probably a failed converter.
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Old 03-01-2008, 09:00 PM   #5
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Bobby, you started an epidemic....have Carmen shut off the back 02's

By the way, long time no hear. How is everything....good we hope. This are cool here, getting ready for Krissy's big day.

See ya soon

Ed
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Old 03-01-2008, 10:22 PM   #6
6SPD98
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Default Code....

Quote:
Originally Posted by TheVetteDoctors View Post
You better take it to the doctor.
The Vette Doctor that is
& bring soup
Might take me a little while to get out there...doing a side job with a friend of mine.
Soup it is....

Quote:
Originally Posted by mowton View Post
Bobby, you started an epidemic....have Carmen shut off the back 02's
By the way, long time no hear. How is everything....good we hope. This are cool here, getting ready for Krissy's big day.
See ya soon
Ed
Everything is good. Hope to see you and Karin soon. Congrats to Krissy
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Old 03-01-2008, 10:27 PM   #7
6SPD98
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Member Since: Apr 2002
Location: Glendale NY
Default PCM Code

Quote:
Originally Posted by Mr. Lucky View Post
P0420 is a catalyst system code. Bank 1 is the driver side. The PCM compares the readings between the front O2 sensor (forward of the catalytic converter) and the rear sensor (after the cat). If it doesn't see much difference... "low efficiency." It could be just an exhaust leak, but with 188.6K on the odometer, it's probably a failed converter.
Thanks Mr. Lucky.....appreciate it.
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Old 03-01-2008, 10:27 PM
 
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