Got 3 ECU codes today

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Sep 3, 2003 | 01:31 PM

SMX

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Got 3 ECU codes today

Need some help here, I got three codes today: 0504, 0104, and 0304
Haynes manual say’s 0504- A/T Control unit
0104 – Vehicle speed sensor
0304 – And your every so famous- Knock sensor. Anyone ever got these codes? its a 96 auto
Thanks

Sep 3, 2003 | 01:55 PM

Kevlo911

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From: Lake Orion, MI

search, check my sig or check the third link on "help check engine light is on" sticky

Sep 3, 2003 | 02:07 PM

Kevlo911

Kevlo for President

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sorry forgot to cgheck the box for my sig

Sep 21, 2003 | 01:15 PM

rkmx5

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I've got the same three codes on a 96 SE. Did you ever resolve the problem? I suspect a single problem rather than all three sensors going bad at the same time.

Sep 21, 2003 | 06:00 PM

maxNYC

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how much mileage do you have on your 96? I think its probably due to have the knock sensor changed. I just had it replaced in my 95 at 58K

Sep 21, 2003 | 06:47 PM

rkmx5

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I have 73K on it now. Will check resistance on the KS but do not know what can be done with the TCM.

Sep 21, 2003 | 10:03 PM

ivelweyz

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Resistance on the KS is misleading as the KS may be faulty even with a correct reading. The KS was most likely set off by one or both of the other codes...