p0480 and p0481

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Jun 4, 2006 | 06:24 PM

ss1129

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From: Ft Lupton, CO

p0480 and p0481

they are from installing a manual fan switch. I followed a write up from one of the members, but he didnt mention a service engine light from it. Is there something I can do to stop them from comming on? If not, can the codes be tuned out?

Jun 4, 2006 | 06:51 PM

2001NBMZ28

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From: Jacksonville, FL

Something's definitely wrong - those are for coolant fan contol circuit and coolant fan relay 2 control circuit. Fans are working OK?

Jun 4, 2006 | 07:21 PM

ss1129

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From: Ft Lupton, CO

I followed the write up and everything works fine. It throws the codes when I manually turn the fans on. me...."hmm Im going to turn the fans on...click" ECM " what the **** is going on bitch I didnt tell the fans to turn on....p0480 p0481"

What does slp do to prevent these lights from comming on with there manual control?

Jun 5, 2006 | 03:58 PM

ss1129

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From: Ft Lupton, CO

Has this happend to anyone else?

Jun 9, 2006 | 10:34 AM

Bad Blue WS6

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From: Germantown Hills IL

that stupid P0480 code

i am having a p0480 come on, but has nothing to do with a manual switch change, i have changed my 3 relay's, but the code persists,,if anyone has a diagram of the wiring for the 2 fans, please holla,,,im at a lose, and dont know where to start.

Thanx everyone.

Jun 9, 2006 | 10:23 PM

bullygoat

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Generally what sets these codes is a short ot ground in the relay control circuit between the PCM and the relay. Now whether it's because you added a manual witch or not it doesn't matter. For the manual switch, you have to add a diode between where you spliced into the control circuit wire and the PCM. As for the codes setting with no manual switches, your going to have to ohm out the wires and find out if it's shorted or not. If it is, your going to have to start tracing wires.

Tim