2005 Dodge Grand Caravan Logo
Posted on Jun 04, 2009
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2005 Dodge Grand Caravan codes P0456 and P0303. Engine light on. Changed Gas cap. Need to pass inspection. Please help with diagnosis.

  • fourcabbys Jun 04, 2009

    I think they mean - P0456 is a evap leak, and P0303 means a missfire in cylynder 3.

  • edward80 May 11, 2010

    what did it say your codes meant?

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2 Answers

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  • Dodge Master 3,640 Answers
  • Posted on Sep 15, 2009
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Joined: Jun 01, 2009
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P0456--emission control system leak(verysmall) leak, check all hoses to emission controls, cylinder 3 missfire detected. could be plugs, wires, or coil.this is code p0303,

  • Anonymous Nov 18, 2010

    po456-- evap emission system leak very ( small )---po303--cylinder 3 misfire detected--- evap emission leak can be any one of emission lines, throttle body may need cleaned at throttle plate etc, check all lines carefully from front to back of vehicle.-- cylinder 3 misfire may be plugs wire or coil on # 3. change plug and wire on # 3 cylinder. have a good one!! -- anything that is emission related can cause a small leak.

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  • Posted on Oct 14, 2016
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We have a 2005 dodge caravan SE, with a code of P0456, how do we go about repairing it?

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5 Related Answers

Jonah Oneal

  • 14092 Answers
  • Posted on Jul 04, 2009

SOURCE: 2005 dodge grand caravan getting code p0406

3.3 engines has the egr valve with transducer.you have to replace the whole unit. code p0406 what its trying to tell you your egr valve circuit is short to ground.it has failed .

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Anonymous

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  • Posted on Apr 16, 2009

SOURCE: Dodge 2005 Grand Caravan water Pump replacement

how difficult is it to change a water pump on a 2005 caravan 3.3L?

Anonymous

  • 2 Answers
  • Posted on Jun 13, 2009

SOURCE: 2005 Dodge Grand Caravan brakes

i dont know if this makes sense, if its the big clip, you push in the cylinder and twist until the clipp comes off

Anonymous

  • 9 Answers
  • Posted on Oct 13, 2009

SOURCE: 2005 Dodge Grand Caravan SXT Malfunction

P0700 is the internal trans controller.

Goodwrench4

  • 262 Answers
  • Posted on Feb 06, 2010

SOURCE: 2005 Dodge Grand Caravan. Code check

Cycle the key on, off, on, off. on. Then count the flashes 12 is normal 55 is end of sequence

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0helpful
1answer

On dodge 2007 dodge grand caravan 3.8l cylinder 3 misfire p303 or p0303

if you cleared the code - fixed arc and checked their are no more arcs - and keeps coming back then problem can be a burnt or carboned valve --lifter -push rod --piston
0helpful
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Caravan malfunction indicator light

typically means a faulty gas cap. Engine code P0456 can also mean their is a small leak in the EVAPVAPORATIVE hoses from tank to under hood.
1helpful
1answer

I have the P0456 on my dodge caravan sxt 2007 with the keys.

http://www.obd-codes.com/p0456

This is usually caused by a gas cap that was not put on properly after a fill up. If this is the case then simply tighten the gas cap and the check engine light should go out in a few days with regular driving or reset with a code reader. You may have to replace the gas cap if the code remains. be sure to get the correct cap.

Check the link above for further tests.
1helpful
2answers

Engine light shows a code P0456 (small evap leak) on 2005 Grand Caravan. Replaced gas cap but engine light stays on.

It is likely a leaky hose in the evap system. The chemicals passing through the hose cause it to become brittle, causing cracking. Take a look at this instruction to see if it helps:
http://www.dodgetalk.com/forums/showpost.php?p=1169489&postcount=6
LMK if it helps troubleshoot the problem.
2helpful
1answer

Engine light on faults p 456 p522

P0456 is Evap Emission control small leak detected.
P0522 Engine oil pressure sensor low voltage.
The first code could be related to a loose, defective, or missing gas cap.
The second code, could be a defective sensor but you will need to confirm. Check oil level and condition first then onto the sensor and related wiring.
0helpful
1answer

2001 Dodge grand caravan with P0456 fault code (evaporative Emission system small leak). What could be causing this and how do I fix it?

Hose cracked,loose,different switches,sensors,gas cap, any number of things. It is a system, on to itself and not easy to repair.
2helpful
1answer

Engine Light on Dashboard stays ON while driving

The check engine light can be anything, in order to help you further you need to get the codes out of the computer. to do this you need to either A. Buy a cheap code reader from an auto parts store, B. Go to an auto parts store like Advance, or Autozone or pep boys, and they Usually will read the codes for you for free. Then you need to post back here with the code read, and We can help further
2helpful
1answer

What is Dodge Caravan trouble code E0456?

it means that your Evap system has small venting leak. gas cap is most common cause. if after the gas cap is changed reset light, if it returns then you will need to get a smoke test done in order to find the leak.
3helpful
2answers

OBD codes 442 & 455

Check all of your EVAP lines and the charcoal canister. Also check the lines and overflow line from the gas cap to the gas tank.
0helpful
1answer

2005 dodge grand caravan has check engine light code PO507

RE: Check Engine Light

The check engine light may come on for several reasons.

It is not necessary to worry as it may be as simple as putting the gas cap on without fully clicking it shut!. If this is the case it will go away by itself in about a week at most!
You can take your car to an auto parts store to have them run a diagnostic (Some will do this for free).
If your car is running fine, re-tighten the gas cap, give it a week or have it diagnosed if you still feel uncomfortable with it.

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