Question about 2003 Chevrolet Impala

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Have a 2003 impala 3.4 replaced fan assembly and relays 2,3 still get check engine light and code p0481 what next?

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Not familiar with the code but I would say, take it to a trusted mechanic who can identify the code, this will tell you which sensor is sending the code. It may be the 02 sensor and can be reset when the mechanic checks and resets your codes.

Posted on Nov 19, 2009

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Service engine Soon light on. Code P0481 on Scanner. Both fans will come on without A/C compressor on so fans are working.


It sounds like you have a control problem , The ECM or PCM energize the relay by supplying a ground or power depending on the manufacturer ! What make , year model vehicle ! P0481 Cooling Fan 2 Control Circuit Malfunction

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2003 CRYSLER 300 SM DTC # P0481 AND # P0340 ALSO # P0300...HELP


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Chevy Impala 2003. Replaced cooling radiator cooling fan. Fan now works (driver side). Hooked up code reader. Received code for cooling fan removed code because fan was replaced. Next day engine light is...


is the passenger side coming on? it is possible that it is setting the code for different speeds also. may want to check the cooling fan relays.

Aug 03, 2011 | 2003 Chevrolet Impala

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2001 suzuki esteem engine code p0481 how do i fix it


Radiator cooling fan 2, control system malfunction. Check fuses under hood & in fuse panel under dash. If all are good check for power & ground to radiator fan motors. Verify motors work by powering up with jumper wires. If they work may have bad relay. If they dont work will need to replace motor.

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1 Answer

Po481code


This code pertains to the cooling fan relay. Change the relay if necessary. When the engine heats up the sensor will send the signal to the relay to start the fan. If the engine is hot & the fan has not started, change it.Good luck!

Sep 29, 2010 | 2003 Chevrolet Impala

1 Answer

Fault codes


P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit
P0481 - Cooling Fan Relay 2 Control Circuit
It is not uncommon for the canister vent solenoid to go out.More then likely this is the correction for this issue.The second problem could be addressed by verifying that the second fan is not coming on and whether or not the fan is receiving any power.Turning the a/c on normally forces the second fan to come on.If it does not a wiring diagram may be necessary to check different points for power.Would start at the relay itself to verify power is going to and through the relay. You can also swap an identical relay with the fan relay just to test if the relay itself is malfunctioning.If it works after that then you need a replacement relay for that circuit.If it still does not work you will need to find out where the power stops flowing in that circuit.

Jun 05, 2010 | 2000 Chevrolet Impala

1 Answer

Is there a part number for the fan 2 circuit


no
that code says that the cooling fan 2 circuit has a failure, when it tried to turn it on the computer did not see a voltage change thus your code. Check the cooling fan 2 relay.

Aug 15, 2009 | 2003 Chevrolet Impala

1 Answer

PO481 code Chevy IMPALA 2003


Looked it up in Chilton's, confirmed in http://www.obd-codes.com/trouble_codes/

P0481 Cooling Fan 2 Control Circuit Malfunction

Each fan will throw a different code. See 3 fans listed for your model. Here's a link for the wiring schematic: http://www.chiltonlibrary.com/content/images/WD/GM/014/WD_GM_014788.pdf


Best of luck.
Greg

May 23, 2009 | 2003 Chevrolet Impala

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