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Chevrolet 5.3L PO 171 AND PO 174 Code

Truck runs very well but has this check engine light on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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leethedeuce
  • 4472 Answers

SOURCE: code po480

Do both fans work for sure? You may want to replace the fans runs anywhere from 140$ up to 250$ depending on the brand.
Keep me updated.
Thanks,
Lee

Posted on Jun 30, 2008

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emissionwiz
  • 76846 Answers

SOURCE: check engine light on

P0700 - Transmission Control System Malfunction, this is a transmission or PCM issue and needs further diagnosis with other test gear.

The P1684 code simply means that the battery has been disconneted within the last 50 engine starts.

Posted on Sep 09, 2008

  • 8 Answers

SOURCE: 2006 trailblazer po 411 code check engine light comes on and off over time is it a sensor or the air pump?

Check all your vacume lines one may have a crack in it

Posted on Apr 21, 2009

Molson02536
  • 3854 Answers

SOURCE: 2004 chevy aveo that the

P0128 - the thermostat may be stuck open or has anyone put a colder thermostat in the car,because once it starts to get cold it will throw a SES with a colder then stock thermostat. Replace the Thermostat should fix this problem.

PO700 is a code telling you there are codes in the TCM of some late model cars where the Transmission control module has been removed from the PCM the vehicles main computer , and basically it happens when the TCM has a issue within itself or the transmission that sets a code and it sends a request for the PCM to illuminate the SES or CHECK engine light. To get at the TCM codes requires in most cases the most up to date scanner software purchased after the cars model year and as of yet is still a little iffy. Standard OBD11 scanners will generally not be able to see these codes.

P1781 is set during engine start up when the ECM & TCM do not communicate properly during initial power up. It will only illuminate the service light if the condition occurs in 2 consecutive start cycles, but the DTC will be stored in the failure records after the first cycle.

Replace the Thermostat and go to a transmission shop that can read the DTC codes with a scanner and reset the ECM for clear the codes. Most Transmission shop will do that free of charge, if not turn the Ignition key's to the on position and and pull the ECM fuse out for 30 seconds and then place it back in. Turn the ignition keys to the off position for 10 seconds and then start the car, the engine may stall but let it. Just start the engine again, the ECM is just relearning the engine and go for a test drive. This will clear all the DTC history in the ECM like the day it cam off the assembly line. Good luck and keep me posted, be glad to answer ay more question.



Posted on Oct 30, 2009

  • 1428 Answers

SOURCE: my check engine light came on 2004 ford taurus had

P174 means Oxygen sensor was slow in switching Single, Right or Rear HO2S - Fuel control

P171 means Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S - Fuel control

Visit http://www.troublecodes.net/Ford/
for a comprehensive code listing for your car.

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Posted on Jan 08, 2010

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1 Answer

ENG. LIGHT ON CODES PO 442 ANDPO 445 IS SHOWING UP ON SCANER


The PO 442 code is an EVAP system small leak, either in the evaporative system or cooling. Sometimes this will occur after a drenching rain and remain until the diagnosis code is reset, usually will disappear after you read the codes. If not, a dealer can reset the code system via the radio believe it or not. PO 445 is similar, an EVAP system code but is usually related to gas vapors being sent to the engine rather than through the atmospheric venting system. Check the gas cap system here first, a gas cap not properly tightened (3 click) will sometimes cause this. Also, look to the spark system wiring harness or purge control solenoid.

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The other day my check engine light came on after my engine started overheating. I did a diagnostic reading on it and the code came up P1258. What does that entail?


code po 1258 is an overheating code, need to check why u r overheating, start simple, do u have fluid, has it been changed , might need thermostat, how old is truck,. is there a leak anywhere.do pressure check on radiator and see if it leaks, check radiator temperature vs engine temperature. get a thermo scanner they work good. point and it reads how hot . if motor is hotter replace thermostat. check make sure oil level is good. get back to me let me know what u find..

Mar 28, 2011 | Chevrolet Silverado 1500 Cars & Trucks

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2003 1500 PICKUP RUNS RICH ON LEFT SIDE, FOULS PLUGS,CHECK ENGINE LIGHT IS ON. RIGHT SIDE IS FINE .ONLY 30,000 MILES ON TRUCK. WHAT SHOULD I CHECK FOR?


is there one plug thats fouls more than other a common problem to check is a bad injector if engine seems to run ok also a missfire in ignition system but that will cause engine to shake run rough we will need to find out what code is regestered take the truck to a shop that can read code for you

Jan 14, 2011 | 2003 Chevrolet Silverado 1500

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I have a 2001 Toyota Corolla with 255K I replaced all 4 injectors with remanufactured OEM Denso injectors (15K warranty that has ran out.) With the following codes about a year ago - PO 171 PO 300 &...


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I have a 1987 f-150 ford and it high idles at 2500 to 3000 rpm what can cause this problem. this truck has a 5.0 in it.


Check the throttle cable for binding and the engine for vacuum leaks.
You may have a stuck idle air control solenoid.
It is hard to say what it might be. Start running some tests and it will help narrow your search.

Apr 21, 2010 | 1987 Ford F 150

1 Answer

Check engine light is on,codes 171,174,system lean,codes came back as 2 oxygen sensor's before cat/conv,do they need to be replaced or could it be something else causing it, any help would be great!!!


O2 SENSORS ARE BAD MOST LIKELY I WOULD CHANGE THEM DISCONNECT THE BATTERY FOR 5 MIN. ( IF YOU DONT HAVE A SCANNER) THIS WILL RESET YOUR COMPUTER AND SHOULD MAKE THE SERVICE ENGINE LIGHT GO OUT.

May 19, 2009 | 1999 Ford Ranger SuperCab

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Engine light comes on. Code is PO305 #5 cyl mis fire.


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Jan 30, 2009 | 2005 Chevrolet Colorado

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Po 108 fault code


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Jan 09, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

CODE PO455


evap leak....... small could by a gas cap or the evap pump

Nov 10, 2008 | 2001 Dodge Ram 1500 Truck 2WD

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