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Reduced engine power and evap leak

I randomly get an reduced engine power and my check engine light is on. Got the error codes of P2112, P2138, P0442, P0455 from the scan

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  • Daniel S Feb 21, 2012

    Also already replaced the gas cap

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6ya6ya
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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: evap emission leak

If the code returns you will have to have the system vacuum tested for a small leak, could be as simple as a loose clamp, only the dealer has the special equip to do these types of tests.

Posted on Sep 22, 2008

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SOURCE: Code Scan Reads P0455 Evap. Emissions Leak, Large

large leek is usually the gas cap. just had the same problem

Posted on Jul 16, 2009

BCAS1298
  • 3092 Answers

SOURCE: CHECK ENGINE LIGHT ON AND REDUCED POWER LIGHT ON,

Replace your throttle position sensor, runs about $60.00 sit on throttle body has a round connector with three wires going o it.

Posted on Jan 05, 2010

  • 714 Answers

SOURCE: The "engine power is reduced" light comes on

po455 is Probable Cause[s]

1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.

Posted on Feb 27, 2010

  • 2 Answers

SOURCE: Received P0455 Evap System Large Leak Detected - 2004 Cavalier

your problem is probably a vacuum hose that goes from the purge valve to the gas tank (crack or broken hose). There should be two of these check both. A broken vacuum line will make the purge valve make a clicking noise that can be mistaken for noisy engine valves.

Posted on Apr 28, 2010

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I have a 2006 GMC 1/2 ton pickup with 5.3 V8. Engine light came on and upon checking, it has a P0442 and P0442 P code. Any suggestions on this? Also how do I erase the engine light.


You erase the engine light by fixing the problem . With every DTC - diagnostic trouble code there are diagnostic flow chart's , steps to find the problem .

DTC P0442 : Evaporative Emission (EVAP) System Small Leak Detected

How to Diagnose P0442 Small Evap Leak 04 Chevy Avalanche

Mar 22, 2017 | GMC Cars & Trucks

1 Answer

Replaced head gasket. now check engine light is on with a p0442 code. are there any evap hoses that I can inspect for cracks or damge since the gasket was replaced.


Tom, Yes, you should check all evap hoses for cracks and leaks.
Common Problems That Trigger the P0442 Code
  • Defective or damaged fuel cap
  • Distorted or damaged Fuel Tank Filler Neck
  • Small tear or puncture in the Evaporative system hose(s) and/or Carbon Canister
  • Defective Fuel Tank Sending Unit gasket or seal
  • Small split in a seam of the Carbon Canister
  • Defective Evaporative Vent Valve and/or Evaporative Purge Valve
  • Defective or damaged Fuel Tank
  • Defective Fuel Tank Pressure Sensor
  • Defective Leak Detection Pump
  • Slightly loose and/or worn clamps or hardened O-rings anywhere in the EVAP system Check the attached links,
    "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Engine Vacuum Leaks Tweet

https://books.google.ca/books?id=RLBuCgAAQBAJ&pg=PT523&lpg=PT523&dq=how+to+check+evap+hoses+for+cracks+and+leaks&source=bl&ots=tXENnJRaXU&sig=b78MxmS0N_fvBD0_lS0QzURuz2U&hl=en&sa=X&ved=0ahUKEwi4kpbz0LbLAhVju4MKHegzC18Q6AEITTAI#v=onepage&q=how%20to%20check%20evap%20hoses%20for%20cracks%20and%20leaks&f=false

How Diagnose Check Engine Light Code P0456 Small EVAP Emission Leak

Volvo S70 Evap Small Leak Common Problem P0442 Charcoal Canister Hose Fix

Mar 10, 2016 | 2000 Chevrolet Malibu

2 Answers

How to repair engine code po442 2009 mazda 5?


Check the purge solenoid under the hood common problem in mazda 5 6 cx7.

Jul 11, 2014 | Mazda Cars & Trucks

1 Answer

Hyaunda 2010 check engine light code P0442


code p0442 has 2 possible fault areas

evaporative emission (EVAP) system --small leak detected===causes --hose connection/s--intake leak--EVAP canister--EVAP canister purge valve
and the second possible

evaporative emission system--large leak detected (fuel cap loose/off)===causes--mechanical fault---hose connection/s---EVAP pressure sensor

May 16, 2014 | 2002 Subaru Impreza

1 Answer

Engine light


code p0442 refers to Evaporative emission system --- small leak detected Possible cause ---hose connections---intake leak EVAP canister----EVAP canister purge valve. I would check the purge valve first.

Mar 20, 2013 | 2007 Nissan Titan LE

1 Answer

What is an error code p0442 for a 2001 seabring mean?


P0442 - Evaporative Emission Control System Leak Detected (small leak)

This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0442 most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
A small leak/hole in a fuel vapor hose/tube
Other small leak in EVAP system
Faulty vent o-ring seal

Possible Solutions: with a P0442, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses


Check it, test it and send us news.

Apr 22, 2011 | Chrysler Sebring Cars & Trucks

1 Answer

2003 Jeep Liberty


p0455 is evap control system no purge or large leak
p0442 is evap control system leak detected (small leak)

the cause for both could actually be a loose gas cap.

Dec 18, 2009 | 2002 Jeep Grand Cherokee

4 Answers

P0442 check engine light code


The computer that read the code for you can also reset it.  If you don't have one, you can go to your local auto parts store and have them reset it for you.  This is what your code means P0442 Evaporative Emission Control System Leak Detected (small leak).  This is what Causes it and possible fixes: CausesA code P0442 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
Possible SolutionsWith a P0442, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, or
  • Inspect the EVAP system for cuts/holes in tubes/hoses

May 21, 2009 | 2005 Kia Sorento

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2003 Chevy Silverado 1500 Error Codes


P0135 is a bad 02 sensor
P0442 is a evap problem
P0449 is a vent solenoid

i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground comes from the pcm i think if you fix this everything else will work they are all computer controled

Mar 23, 2009 | 2003 Chevrolet Silverado 1500

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