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I failed aircare diagnostic problem code P0442

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This page may be helpful: http://www.obd-codes.com/p0442

Posted on Sep 22, 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

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When Engine light came on 2009 Mercury Sable and got P0442 diagnostic code so how bad is diagnostic and how costly to fix?


code p0442 refers to evaporative emission system(EVAP)--small leak detected==causes-- hose connections,--intake leak--EVAP canister--EVAP canister purge valve
it also refers to large leak detected ( loose fuel cap/missing cap) causes--mechanical fault--hose connections---EVAP pressure sensor
If it has just started then check that the fuel cap is on tight or replace the pressure sensor or lastly ( it will probably the most expensive) the purge valve.

Nov 17, 2014 | 2009 Mercury Sable 4WD

1 Answer

Diagnostic code p0442


CODE PO442 EVAP SYSTEM SMALL LEAK DETECTED 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 Read more at: http://www.obd-codes.com/p0442 Copyright OBD-Codes.com

May 21, 2013 | Cars & Trucks

2 Answers

What does the codes p0442,p0136 &p0141 mean on my 2001 ford taurus it failed inspection for these codes


P0442 FORD - Evaporative Emission System Leak Detected Small Leak

Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
P0136 - O2 Sensor Circuit Malfunction Bank 1 Sensor 2
Possible causes- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Rear Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

P0141 FORD - O2 Heater Circuit Bank 1 Sensor 2

Possible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)

Sep 27, 2012 | 2001 Ford Taurus

1 Answer

I have OBDII Code P0442 On dodge Stratus SXT 2005


The P0442 means Evapotative Emission Control System Leak Detected (small leak), I think you have known where is the problem.

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more car diagnostic tools you can browse

Aug 16, 2012 | 2005 Dodge Stratus Sedan

1 Answer

Where is the vent solenoid for the 2005 montana sv6 fail code was p0449.


That will be your O2 sensor. It is tapped into your exhaust manifold. Very cheap fix. You can go to Autozone and get it It only takes five minutes to fix. Check it out.

Aug 04, 2012 | Pontiac Montana SV6 Cars & Trucks

2 Answers

P0442 is the code that I need to know what it means/2003 chevy blazer


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
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

Mar 23, 2012 | 2003 Chevrolet Blazer

1 Answer

My 2002 Dodge Grand Caravan Sport recently failed the NC emissions test.The codes it threw were p0442 and p0455.I replaced the gas cap and took it to Advance Auto and this is the codes I got back.Codes...


Chrysler EVAP P0442 P0445 Smoke Diagnostics
P1698 Dodge PCM Fault No CCD Message From TCM
Do you know what a serial data communication network is ?
CCD SCI DATA LINES TECH TIP

Sorry dude but you don't have a prayer of a chance to fix this ! You know anything about automotive electronics , electrical systems ? Have a factory or professional scan tool . Going to advance auto won't cut it .

Apr 27, 2017 | 2002 Dodge Grand Caravan

2 Answers

P0442 code-2004 mitsubishi diamante


its an evap system small leak. most common cause is a loose gas cap. but could be any leak in the tank vent system

Apr 21, 2010 | 2004 Mitsubishi Diamante

1 Answer

Diagnostic code p0442


Hi, a P0442 is Evaporative Emission Control System Leak Detected (small leak). Start with the simplest thing first, make sure the gas cap is on tight. If it is, replace it with a new GM part (not a cheap aftermarket one). If that doesn't fix it, there are more steps listed here:
http://www.obd-codes.com/p0442

Jan 03, 2009 | 2003 Oldsmobile Alero

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