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Old 03-09-2010, 06:26 PM   #1 (permalink)
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Default Check Engine Light

Hi. I search for the error code to see who else or what ic and do about my problem but here go's.

I have been getting code P-0420 and P-0420 pd on my scanner i looked up what it is and also called dealer about it. I was told that it could be 2nd o2 senser or the cat going bad or seals or motor. Well now i've noticed that my car now rev's high at first on start up. I'm going to take my car in on friday to get them to look and fix the p0420 but I was wondering can i delete and hope the rev problem go's away for now? Any feedback is grateful. Thank you.
I have an 08 Suzuki SX-4 with 50K on car and about 30K on motor.
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Old 03-10-2010, 07:16 AM   #2 (permalink)
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Unfortunately, there are many problems that do not have their own idiot light, but are lumped together under the "Check Engine" light.
That's disturbing, when you know or at least suspect that something's wrong, but you don't know what.
Obviously, even if you have your own scanner, you still don't know for sure, but wind up going to a Suzuki service center anyway.

On my 2006 Forenza, my check engine light came on when I had a leaky oil filter and my oil was getting low. After driving carefully, for about five miles, my oil light finally came on and I knew I needed to get to a service center, ASAP.

If in the process of doing an oil change, oil was spilled on the lower O2 sensor that can cause a problem. That's been talked about in the SX4Club forum.
On the 2009 SX4, that lower O2 sensor was moved further back, about a foot away from the oil filter, to eliminate that problem.

By 50k miles or a little more, O2 sensors can become contaminated with impurities in the gas and can drift so far out of spec that they are virtually useless.

I'll be changing both of mine, at about 50k miles. Both performance and gas mileage will improve.

Good Luck and please let us know what the dealer finds.

The Shadow (ocala fl)
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Old 03-10-2010, 11:44 AM   #3 (permalink)
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Quote:
Originally Posted by Spooned ITR View Post
Hi. I search for the error code to see who else or what ic and do about my problem but here go's.

I have been getting code P-0420 and P-0420 pd on my scanner i looked up what it is and also called dealer about it. I was told that it could be 2nd o2 senser or the cat going bad or seals or motor. Well now i've noticed that my car now rev's high at first on start up. I'm going to take my car in on friday to get them to look and fix the p0420 but I was wondering can i delete and hope the rev problem go's away for now? Any feedback is grateful. Thank you.
I have an 08 Suzuki SX-4 with 50K on car and about 30K on motor.
I think reading your posting here I might have found out why mine comes on sometimes now, I put a cat back on and it may just be this causing the engine light to come on, but it doesn't come on in town only on a long trip on the highway........
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Old 03-12-2010, 06:58 AM   #4 (permalink)
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Cat? Cat?

Was that a tom cat or a pussy cat?

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Old 03-13-2010, 10:09 AM   #5 (permalink)
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Cat? Cat?

Was that a tom cat or a pussy cat?


Both.......

Cat back, I am looking into getting a header for her as well.
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