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Transmission code P1491 - 1999 Jeep Cherokee

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Please check the code or you may have it re-scanned. Some shops would let you borrow their scanner. The problem is with the cooling fan. It may be a bad relay or the circuit itself or the wiring may be bad.

Posted on Sep 26, 2011

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Posted on Jan 02, 2017

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1 Answer

2003 grand caravan code p1491


As a Dodge code it refers to..
P1491 Secondary Switch Solenoid Circuit Malfunction.
"P1491 is for the cooling fan relay circuit. There is a seperate fan for the a/c condensor on your truck. When this code sets it is because the fuse is blown. Its fuse 39 in the box under the hood. The cause of this fuse blowing is a bad fan motor."

Mar 07, 2018 | Cars & Trucks

1 Answer

P1491


Google the code

Type: OBD P1491 2002 Jeep

Mar 19, 2014 | 2002 Jeep Liberty

1 Answer

99 durango getting code P1491


code P1491 radiator fan control relay circuit.

Aug 11, 2013 | 1999 Dodge Durango

1 Answer

I just got my car scanned and a few codes pop up


Error Code: P0130
Fault:
Oxygen Sensor (O2S) 1, Bank 1 - Circuit Malfunction
Possible Cause:
Malfunction Indicator Lamp (MIL) Triggered on first occurrence.
-Wiring harness.
-Oxygen sensor (O2S).
-Engine control module (ECM).

Error Code: P0505
Fault:
Idle Speed Control (ISC) System - Malfunction
Possible Cause:
-Wiring harness.
-Idle speed control (ISC) actuator/Idle air control valve (IAC) valve.
-Throttle motor.
-Throttle valve tight/sticking.
-Engine control module (ECM).

Error Code: P0100
Fault Location:
-Mass Air Flow (MAF) Sensor/Volume Air Flow (VAF) Sensor - Circuit --Malfunction
Possible Cause:
-Wiring harness.
-Mass air flow (MAF) sensor.
-Volume air flow (VAF) sensor.
-Engine control module (ECM).

Error Code: P1491
Fault:
Exhaust Gas Recirculation (EGR) Valve Insufficient Lift
Possible Cause:
-Wiring harness.
-EGR Valve.
-ECM

Error Code:P1607
Fault:
-Engine Control Module (ECM)/Powertrain Control Module (PCM)

Error Code: P0966
Location:
-Pressure Control (PC) Solenoid B - Circuit Low
Possible Cause:
-Wiring short to earth.
-Pressure control (PC) solenoid.
-Engine control module (ECM)/Powertrain control module -(PCM)/Transmission control module (TCM) .


Apr 30, 2013 | 2004 Honda Civic

2 Answers

99 acura code p1491


Code P1491 in Honda/Acura vehicles means insufficient EGR valve lift. Note - this is not the same as 0401 for EGR low flow when you have to clean EGR passage in the intake manifold. If code 1491 is not accompanied with 0401 - that could be faulty EGR valve itself. Try to reset the code, and if it will return soon - replace EGR valve. If, however you see both codes together - cleane the manifold passage before you replacing the valve.

Sep 20, 2012 | Acura RL Cars & Trucks

3 Answers

Code p1491 on a dodge caravan


Trouble code P1491 means: Radiator fan relay control circuit

Feb 28, 2011 | Dodge Caravan Cars & Trucks

4 Answers

What does the diagnostic test code P1491 means?


Hello jhonney21,

The P1491 is Radiator fan control relay circuit code. It is set if an open or short circuit is detected in the radiator fan relay control circuit.

Regards,
netvan

Feb 25, 2011 | 2001 Chrysler Voyager

1 Answer

2001 honda odyessy has the following trouble codes: P1491, P0401,P1739. It has also been turning over longer before starting and has cut off while in park and idling. What does this mean?


P1491= "exhaust gas recirculation valve insufficient lift."
P0401= "exhaust gas recirculation insufficient flow"
P1739= ""3rd clutch pressure switch" (automatic transmission code)

the exhaust gas recirculation (EGR) valve is vacuum operated. there may be a vacuum line that is broken or leaking or become detached from the EGR valve. any vacuum leak will cause the engine to run lean, leading to poor starting and idle cut-off due to lean fuel fuel mixture.

The EGR valve has a vacuum diaphragm inside it. this diaphragm could be leaking. the EGR valve will need to be replaced if this is the case.

The P1739 code shows that a problem with the 3rd clutch pressure switch or the wiring leading to the switch has been detected. It may be an intermittent fault. Reset the trouble codes and drive for a while and see if this code returns. If so, check the wiring and switch operation of the 3rd clutch switch.

Jan 31, 2011 | 2001 Honda Odyssey

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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