Question about 2001 Jeep Grand Cherokee

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We have a 2001 jeep cherokee laredo and the code that came up with the check engine light was P0456. When we took it to autozone they said it was something with the evap system or a vaccum tube. While looking under the hood we noticed a broken par coming off the front of the engine. "PVC elbow and gromet". Fixed that and still can't get the engine light to go off. Advice?

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Try removing the batt cable for a few minutes and re enstall.Ck engine light should be off now.

Posted on May 02, 2019

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Lots of times this code is just bad or loose fuel cap allowing vacuum to leak past at test by computer try cleaning rubber gasket or replace it best place to start. All my jeeps have had exact issues

Posted on May 02, 2019

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The OBDll system will need to be reset with a scanner. Waiting for the computer to do a system can take time and mileage.

Posted on May 02, 2019

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Posted on Jan 02, 2017

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SOURCE: possible vaccum in fuel tank, EVAP system.

TRY REPLACING THE EVAP CANISTER

Posted on Oct 27, 2009

calilourw1
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SOURCE: 2003 Jeep Grand Cherokee Laredo - Code P0456 EVAP leak

open hood and ck for broken vacuum hoses going to the purge valve(2 vacuum ports and a wiring connector)
on the drivers side between airbox and firewall
if good remove driver side rear tire and inspect hoses next to the gas tank and 3rd, the canister is in that wheel well also insp for cracked hoses there also, been working for jeep 12 years i charged people about 1 hour to correct this probem.

Posted on Dec 18, 2009

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SOURCE: 2000 daewoo leganza the pvc elbow

I use a web site www.car-parts.com to find used parts all over the country. The site sorts by price and location so you can order what you need from anywhere you want.

Posted on Jan 20, 2010

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1 Answer

How to fix obd 2 PO456 on jeep grand cherokee laredo 2002


Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
  • A small leak in any of the EVAP hoses or fuel tank hoses
  • A small leak in the purge valve or vent valve
  • The EVAP Canister may be leaking

Oct 09, 2012 | 2003 Jeep Grand Cherokee

1 Answer

I own a 2001 jeep cherokee laredo. when i start off it will shut off while driving, but starts right backup will do this two or three times then runs fine after that. acts like it stops getting power all...


Chrysler products are notorious for the crankshaft sensor going out and causing the symptoms you are describing. It also won't set a code to turn the check engine light on.

Jun 02, 2011 | 2001 Jeep Grand Cherokee

2 Answers

Just bought a 2004 laredo, check engine light was on, DEQ said it was the 02 sensors, took it to the dealer they replaced the AIS motor and said it would fix the problem. about 2hrs later the engine light...


Take it to your local autozone and let them run the code check on it they can tell you why it is on and it is free, also the 02 sensors are not the same as the AIS motor could just be the o2 sensors need to be changed!

Jan 10, 2011 | 2004 Jeep Grand Cherokee

2 Answers

Grand cherokee laredo 2001 the engine light its turn on what should be the problem


There could be multiple things wrong there is a scan tool that can tell you what the problem is. Autozone does this service for free once they check it there will be a code to explain what is wrong.

Nov 30, 2010 | 2001 Jeep Grand Cherokee

1 Answer

I have a 2006 Cherokee Jeep Laredo. Recently had


its probly the 02 sensor. u can get it checked 4 codes @ a mechanics shop. or dodge dealer

Feb 15, 2010 | 2006 Jeep Grand Cherokee

1 Answer

2003 Jeep Grand Cherokee Laredo - Code P0456 EVAP leak


open hood and ck for broken vacuum hoses going to the purge valve(2 vacuum ports and a wiring connector)
on the drivers side between airbox and firewall
if good remove driver side rear tire and inspect hoses next to the gas tank and 3rd, the canister is in that wheel well also insp for cracked hoses there also, been working for jeep 12 years i charged people about 1 hour to correct this probem.

Dec 18, 2009 | 2003 Jeep Grand Cherokee

3 Answers

Check engine light came on 2001 Grand Cherokee Laredo V-6


hello rich if you dont own a obd2 code tester then you can take your jeep to any auto parts store like auto zone and thay will use there tester for free and tell you what the faults are on your jeep and how to fix it and if its a sensor or what ever there also have the parts you'll need to replace.thay also sale the testers if you want to buy one for future use thay can run any were from 60.00$ -150.00$ but i just have them use theres for free to check my car.

Mar 30, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2001 jeep cherokee grand laredo starting problem


Try replacing the crankshaft sensor sounds like thats your problem if not the fuses or relays still no luck them you might have pcm problems....

Jul 15, 2008 | 2001 Jeep Cherokee

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