Question about Toyota Cars & Trucks

1 Answer

Toyota Highlander code po303 and PO430

What is the cause of Toyota Highlander 2007 code PO303 and PO430

Posted by Anonymous on

Ad

1 Answer

Dan Burke

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 29 Answers

The p303 is a misfire on cylinder 3. Most likely a bad ignition coil. The p430 is an evaporate system code. (The system that goes off when your gas cap is loose). On Toyotas, most likely replacing the charcoal canister.

Posted on Aug 15, 2017

Ad

5 Related Answers

Anonymous

  • 4 Answers

SOURCE: 3 codes po303,uo101,uo107

break down of the codes is

po303 - that would be a misfire on cylinder 3
uo101 - cant communicate with TCM
uo107 - lost communication with throttle actuator control module

Posted on May 28, 2009

Ad

Anonymous

  • 115 Answers

SOURCE: reads codes of po300,po302,po303,po305

Hi these are mis-fire codes ,
P0300 is a general mis-fire detected code the others relate to specific cylinders,
P0302 is cylinder 2 misfire
P0303................3........
p0305..................5........
I would check your spark plugs first if Ok you need to make sure the coils are working ok for this you need an osciloscope to check output voltage if your not sure then take to a qualified mechanic with Cadilac experience it could be caused by an air leak,bad ECT sensor or even Mass air flow sensor ,codes only tell you the result not the cause

Posted on Jul 24, 2009

Anonymous

  • 407 Answers

SOURCE: i got coes po604, po303, po300, and po301 for my

miss fire codes need to check tune-up, proper spark at all cylinders

Posted on Oct 15, 2009

Anonymous

  • 1 Answer

SOURCE: po320 code and code po303 2004 lincoln navigator

Replaced a camshaft sensor still running rough & engine light still on, 2004 lincoln nav. 5.4 liter

Posted on Apr 28, 2010

jsmes1027

Jonathan S

  • 749 Answers

SOURCE: PO303 PO353 codes on a 02 lincoln ls missfire?

P0353 - Ignition Coil 3 Control Circuit P0303 is a cylinder #3 misfire.Good chance the the cylinder 3 coil has failed.

Posted on Jun 06, 2010

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Went through a puddle and check engine light came on with code po303


this indicates a misfire on cylinder 3. it could have be plug, wire, coil. the water may have caused a short when these items got wet.

Mar 11, 2015 | 2007 Hyundai Accent GS Hatchback

1 Answer

I have Codes po300,po303,po303pd toyota 4 runner


P0300 - Random/Multiple Cylinder Misfire Detected or Misfiring Of Multiple Cylinders
P0303 Cylinder 3 Misfire Detected

Sep 13, 2014 | 1997 Toyota 4Runner

1 Answer

06 scion xa po303 misfire code under load


Recently got same code. It's a catalytic converter problem most likely requiring replacement. Everywhere recommends to not go with a generic as they'll only last a year or so and to go with a Toyota original. Cost of total is $1400 from Toyota, around $500 for generics from independent garages. Good news is that Toyota/Scion has 8 year/80,000 mile warranty of catalytic converter so if damage to cat is not user-caused you'll be covered for free. So hurry and call local Toyota dealership/repair for appointment ...

Jun 07, 2014 | 2006 Scion xA

1 Answer

Po303


code po303 refers to cylinder 3--misfire detected===causes --engine mechanical fault---wiring---ignition/ fuel system---injector---ECT/MAF sensor---ECM. check plug and HT lead to no 3 cylinder. Check that the injector to 3 cylinder is operational and not blocking or squirting. Have a compression test done to check for compression / gasket problems

Dec 14, 2013 | 2006 Chevrolet HHR

1 Answer

How u fix code po303 passat 2001


i still have same code po303 i have change spark plugs and coil i add a ground wire i can resat end drive for 20+ milages no check enigine light
turn off start up runs for minute or so then coms back on check enigine light same po303 enigine runs very smoth no vibration what so ever I AM LOST

Feb 16, 2013 | 2001 Volkswagen Passat

1 Answer

Cod po303


PO303 IS CYLINDER #3 MISFIRE POSSIBLE CAUSES ARE FAULTY COIL, FAULTY SPARK PLUG, FAULTY WIRE, FAULTY INJECTOR, POOR COMPRESSION , OR POSSIBLE BAD COMPUTER

Feb 07, 2011 | 1999 Ford Expedition

1 Answer

What does the code po303 mean


PO303 = Misfire detected on cylinder # 3 -- Possible need for tune up or related service Plug wires, spark plugs?. Good Luck, Ned

Aug 11, 2010 | 2004 Dodge Stratus

1 Answer

PO303 PO353 codes on a 02 lincoln ls missfire?


P0353 - Ignition Coil 3 Control Circuit P0303 is a cylinder #3 misfire.Good chance the the cylinder 3 coil has failed.

Jun 06, 2010 | 2002 Lincoln LS

2 Answers

My check engine light came on the day after I had my car smog checked. My Tech noted error codes po136, po174, po303 and po305, It's a 2002 Highlander with only13,660 miles on it. Toyota had it for a...


the po303 and p0305 codes are indicating a cylinder 3 & 5 MISFIRE respectively. the other codes are for o2 sensor and fuel trim. the misfire codes should be fixed first and then worry about the others if they still exist. if the vehicle has direct ignition or coil on plug, this is a good place to start, the ignition coils for those cylinders. a scanner with a misfire monitor would really help to narrow done the problem and as always a tune-up never hurts if it hasn't been done for some time or plugs, air filter, etc, show signs of deterioration. the misfire codes if left untreated will release raw hydrocarbon emissions into the environment not to mention the damage it could cause to your catalytic converter due to overheating. also your gas mileage will suffer. hope this will help yoy

Jan 28, 2010 | 2002 Toyota Highlander

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

134 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

Marvin
Marvin

Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...