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P1494 manufacter control aux emission controls code is on

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SOURCE: My 2003 Kia Spectra has Diagnostic codes: P1404 & P0444.?.?

the purge valve i believe is located near your gas tank unless theyve moved it i should look like a little canister cyclinder shaped. both codes could be set off by the same problem. try replacing the valve.

Posted on May 05, 2009

  • 142 Answers

SOURCE: engine light on 3 codes in system

The lean running codes are related to the p-1000 code...

Running lean on bank 1 and bank 2 means your oxygen sensors sense too much oxygen in your exhaust flow. This means either your engine is getting unmetered air (air that the engine does not know is coming in, therefore does not send fuel to compensate for...) (air that your mass air flow sensor does not see). You could have either a bad mass air flow (MAF) sensor (in the intake piping after the filter; this sensor tells your engine how much air it's taking in, so it can send the right amount of fuel through the injectors to properly burn with the air available with as little emissions as possible), or you could also have a cracked/broken intake piping after this sensor which lets air in the intake that the sensor does not measure... A large vacuum leak could also let unmetered air in the engine.

Or... Another possibility here would be low fuel pressure (bad fuel pump, bad fuel pressure regulator, fuel leak), as not enough fuel for the air would also cause the same lean condition.

It could be that some oxygen sensors are bad...

These conditions are hard to pinpoint exactly unless you have a scanner that can read sensor data (MAF Flow, fuel pressure, oxygen sensor values)...

The first thing I'd do would be to check for cracks or damage in the intake piping... If there is none, then it might be a low fuel pressure issue, or sensor problems...

Posted on May 08, 2009

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SOURCE: my 1995 ford ranger pu.is throwing code p1401

Code P1401 Is (DPFE Curcuit High Input )Its Part Of The EGR System It Tells The EGR Valve What To Do The DPFE Stands For (Delta Pressure Feedback EGR Sensor) It Messures Pressure In The EGR System And Tell The ECM Weither To Open Or Close The EGR Valve

Posted on Jul 16, 2009

techbuster
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SOURCE: check engine code P1494???

Definition of error code
Evap leak detection pump pressure switch condition
Explanation


ECM detected the leak detection pump switch did change after solenoid was energized


Probable Cause
1.-Leak detection pump defective
2.-Open or shorted circuit condition
3. Solenoid defective

Posted on Oct 07, 2009

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Code p1494 grand laredo cherokee 2001


Here is the definition.
You'll need a shop manual for the procedures.

P1494 JEEP Description The Evaporative emissions system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, can allow vapors to escape into the atmosphere. The leak detection system tests for EVAP system leaks and blockage.


During the self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LD pump to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.
Read more: http://engine-codes.com/p1494_jeep.html#ixzz2JDPIwqxm

Jan 27, 2013 | 2001 Jeep Grand Cherokee

1 Answer

P1494 on 2003 jeep liberty


that code is manufacturer auxiliary control emissions control

Oct 13, 2012 | Cars & Trucks

1 Answer

P1494 code


Hi there:Here's a little information on it and some things to check...



7_31_2012_7_04_40_pm.gif


For more information see if you can get a copy of this Technical Service Bulletin from your local Mitsubishi dealer.

NO.: TSB-98-13-012
DATE: September, 1998
MODEL: 1996-97 Eclipse 2.0L Non-Turbo

SUBJECT:
Evaporative Emission Control Leak Detection System Diagnosis

PURPOSE:
This bulletin describes the operation of the evaporative emission control leak detection system and how to diagnose diagnostic trouble codes (DTCs) relevant to this system (DTCs 183, 184, 187, 160, and 161).

I think the whine you hear while turning the steering wheel is a P/S system that's low on fluid or a P/S pump starting to go bad.

The rattle under the dash could be anything from loose change to a loose component.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jul 31, 2012 | 1999 Mitsubishi Eclipse

1 Answer

P1494 code engine light on


Leak Detection Pump Switch or Mechanical Fault is P1494, Iit is an evaporative emissions device that is used to pressurize. It is located behind the drivers headlight in the engine compartment. May be loose wiring or faulty sensor. Try resetting it or the battery after inspection and see if it continues

Jan 19, 2011 | 2001 Jeep Cherokee

1 Answer

In my 1997 Jeep Grand herokee my check engyne light is on and the code P 1494 is coming up and reads " auxiliary Emision Control,, how to fix this


p1494 code indicates a fault was detected in the LDP (leak detection pump) that is part of the EVAP system. You most likely have a defective pump switch. This area of the emission system can sometimes be very difficult to diagnose, but usually the fault can be corrected by replacing the switch.

Oct 15, 2010 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Settimng codes p1494 & p1698 -what is this? 1997 voyager


code1494 leak detection pump switch does not respond to input. code 1698 no message received from transmission control module. hope this will help !!!

Apr 05, 2010 | 1996 Dodge Caravan

2 Answers

2001 jeep cherokee has a p1494 code and a p0301 code seems to be running fine but want pass emissions


0301 is cyclinder 1 miss fire,check coil pack and spark plug,plug first,1494 is the fan relay,It's in the right front of the engine compartment. Kind of behind and below the RF headlamp and in front of and below the fuse box.
Easy to replace, just unplug it and plug the new one in.
The relay is the most common cause for that code with a no fan operation condition, we see it all the time.

Jan 31, 2010 | 2001 Jeep Cherokee

1 Answer

Check engine code P1494???manufacture control auxiliary emission control


Definition of error code
Evap leak detection pump pressure switch condition
Explanation


ECM detected the leak detection pump switch did change after solenoid was energized


Probable Cause
1.-Leak detection pump defective
2.-Open or shorted circuit condition
3. Solenoid defective

Oct 07, 2009 | 2003 Jeep Grand Cherokee

1 Answer

Codes for durango p0443-0753-1765-1494


danbalue, a code P1765 means Transmission 12V Supply Relay Control Conditions and P1494 means EVAP LDP Pressure Switch Fault Conditions.

I found info on the following codes:
P0443 - http://www.obd-codes.com/p0443
P1494 - http://www.check-engine-light.com/dodge

Good luck.

Sep 05, 2009 | 1999 Jeep Grand Cherokee

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