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P1491 CHECK ENGINE LIGHT ON

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P1491 EGR Valve Lift Insufficient Detected.Egr may need replacing.

Posted on Oct 26, 2012

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2 Answers

CHECK ENGINE LIGHT ON.


remove the EGR valve and clean the carbon from the port it is connected to, they are known to get clogged up, you may also have a bad egr valve.

Oct 25, 2012 | 2000 Honda Accord

1 Answer

What does p1491 code mean for 2004 nissan frontier


If the EVAP canister is OK, and there are no other visual damage to the EVAP system (e.g. loose or broken hoses), replacing the vacuum cut valve bypass valve takes care of the problem.

Jun 18, 2012 | Nissan Frontier Cars & Trucks

1 Answer

Check engine light is on with a P1491 code . what does that mean? 2004 1500 Ram quad cab,2 wheel drive ,4.7 engine


P1491 Secondary solenoid switch circuit malfunction you should not have this code you need to refeer to the dealer about the PCM calibration there is a recall on your vehicle The recall number is D24 incorrect PCM calibration

Jul 11, 2011 | 2004 Dodge Ram 1500

3 Answers

Code p1491 on a dodge caravan


Trouble code P1491 means: Radiator fan relay control circuit

Feb 28, 2011 | Dodge Caravan Cars & Trucks

1 Answer

I have a chrysler 2003 town & country - the check engine light came on and it has 2 codes - P1684 & P1491. Can you tell me what the problem might be?


P1491 Radiator fan relay control circuit, Most likely you need a fan relay or fan module.
P1684 Battery was disconnected, this code will not turn on CEL

Feb 18, 2011 | Chrysler Town & Country Cars & Trucks

1 Answer

Replaced a radiator fan relay switch p1491


There should have been an erase button on the scanner they used at advance, this should erase the memory

Jul 18, 2010 | 1998 Dodge Grand Caravan

2 Answers

Check Engine Light


It is for the radiator fan relay control circuit.It means there is a problem in the cooling fan relay circuit.Could be the relay,wiring,or the fans.Check the fuses and relay over if it looks good then you have to take it in to get it diagnosed.You need a scan tool and you also need to know how to use a multimeter.Hope this helps.Good luck.

Feb 24, 2010 | 2000 Dodge Caravan

1 Answer

My check enigne light came with code P1491


This is a code for the circuit,so check the wires to the relay.and check to see if the fan is good,by running a hot wire to the fan from the battery.The fan may have gone out.If all this is ok,replace the coolant sensor.

Oct 08, 2009 | 2000 Dodge Dakota Quad Cab

1 Answer

1998 Altima GXE has a code of P1491. It was


Code P1491 is not the PVC Valve.It is the Vacuum Cut Valve Bypass Valve.
Which is located above and away from the egr canister under the driver side rear bumper it is round and have about 3 hoses connected to it. if it is from a check engine light that says look at vacume cut valve check the egr canisters purge valve some times they stick and throw the wrong code

Sep 01, 2009 | 1998 Nissan Altima

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