Question about 2002 Chevrolet Avalanche

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Service engine light stays on.Oxygen senor& IAT sensor replaced .

Light still on told I now need an EVAP vent solenoid P1665.1998 OLDS CUTLASSS.HELP!

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Hi e_lockley. The description for that P1665 code is EVAP Vent Solenoid Control Circuit Conditions. It refers to the circuit (electrical) of the solenoid.

Do a proper diagnosis, don't just replace the solenoid because the problem may also be with the wiring and connectors leading to the solenoid. Grab a repair manual and do it yourself or ask your mechanic to verify that the part has failed before replacing it.

Good luck. You may also want to read up on another P1665 case here - http://www.obd-codes.com

Posted on Feb 12, 2009

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Solution for 1999 chevy cavalier code p0440


There has been a service bulletin isued for that code. I have run into this before, also the wires comming out of the connector. That would bethe first thing to check. Here is what the bulletin states. Emissions - SES Lamp ON/DTC P0440 (EVAP) SetNotesFile In Section: 06 - Engine/Propulsion SystemBulletin No.: 02-06-04-044Date: August, 2002TECHNICALSubject: Service Engine Soon (SES) Light Illuminated, DTC P0440 Set (Replace Fuel Tank Evaporative Emissions Control System (EVAP) Vent Solenoid Harness) Models: 2000-2002 Chevrolet Cavalier2000-2002 Pontiac Sunfire ConditionSome customers may comment that the SES light is/was illuminated.A technician may find DTC P0440 is stored in the PCM.CauseThe EVAP solenoid harness may be misrouted around the rear antilock brake (ABS) wire harness causing a chaff/damage to the EVAP vent solenoid harness, setting DTC P0440.CorrectionFollow the service procedure below to diagnose and correct this condition.1. Install a Tech 2 scan tool and select the appropriate vehicle. Verify that a DTC P0440 is stored in the PCM. 2. Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle in General Information (SI Document ID # XXXXX).

4_9_2012_3_31_41_pm.gif

Locate and inspect the EVAP vent solenoid harness (3) routing. The harness may be routed below the ABS wiring harness (4) at the right rear corner of the fuel tank, causing stress on the EVAP solenoid harness (3).



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4.Disconnect the EVAP vent solenoid harness (3) from the EVAP vent solenoid (2) and connector C313 (1). Discard the EVAP vent solenoid harness (3).


5.Connect the new EVAP vent solenoid harness (3), P/N 22687059, to the EVAP vent solenoid (2), route the harness above the rear ABS harness (4) and connect the EVAP vent solenoid harness (3) to connector C313 (1).


6.Lower the vehicle.


7.Clear the DTC's with the Tech 2 scan tool.



If all of the wires are good you will want to check for any leaks in the evap system.



Hope helps.

Apr 09, 2012 | 1999 Chevrolet Cavalier

2 Answers

P1443 code problem. How do I fix this?


P1446 - EVAP Canister Vent Control Valve Close
EVAP canister vent control valve remains closed under specified driving conditions.

This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.

This solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System (Small Leak) diagnosis.

The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)

About the possible causes that your must solved:
- EVAP control system pressure sensor and the circuit
- Blocked rubber tube to EVAP canister vent control valve
- EVAP canister vent control valve
- Water separator
- EVAP canister is saturated with water


Hope this helps.

Apr 27, 2011 | Mercury Cougar Cars & Trucks

1 Answer

Engine light on, all levels checked and filters new. Taken to Auto Zone and OEM number to cross is P0443. List was Puge or vent solenoid defective, connector and wiring, Fuel saturated vapor canistar,...


Try disconnecting your battery for 15 minutes...then re-connect. This will reset all of the solenoids to factory specs...and will clear the engine light. If the engine light comes back on then you should try to get diagnosed at a free diagnosis service shop...you may need to call a few. Hope this helps.

Feb 24, 2011 | Buick Lucerne Cars & Trucks

1 Answer

My engine light is on . I have a code # E-0455


The PCM monitors vacuum level via the fuel tank pressure sensor input. At an appropriate time, the EVAP purge solenoid and the EVAP vent solenoid are turned on, allowing engine vacuum to draw a small vacuum on the entire evaporative emission system. After the desired vacuum level has been achieved, the EVAP purge solenoid is turned off, sealing the system. A leak is detected by monitoring for a decrease in vacuum level over a given time period, all other variables remaining constant. A large leak in the system causes DTC P0445 to be set.

If the desired vacuum level cannot be achieved in the test described above, a large leak or a faulty EVAP purge solenoid is indicated. This can be caused by the following conditions:

*Disconnected or faulty fuel tank pressure sensor.

*Missing or faulty fuel cap.

*Disconnected, damaged, pinched, or blocked EVAP purge line.

*Disconnected or damaged EVAP vent hose.

*Disconnected, damaged, pinched, or blocked fuel tank vapor line.

*Disconnected or faulty EVAP canister solenoid.

*Disconnected or faulty EVAP vent solenoid.

*Open ignition feed circuit to the EVAP vent or purge solenoid.

*Damaged EVAP canister.

Oct 22, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Engine light comes on. Another mechanic told me it (after doing a smoke test)said it is my evap purge solenoid.I replaced that,lightpo440,still comes on. I replaced my FP that went ,and cleaned the...


CHECK THE PURGE OR VENT SOLENOID POWER CIRCUIT IS OPEN.CHECK FUSE.YOUR CHARCOAL CANISTER FILTER FULL OF FUEL AND MOISTURE.A BAD GAS CAP WILL CAUSE PROBLEMS.CHECK TO MAKE SURE FUEL VAPOR LINES OR PURGE VAPOR LINES IS NOT CLOGGED OR DAMAGED.

Nov 07, 2009 | Chevrolet Cavalier Cars & Trucks

1 Answer

2005 chevy cobalt 37.000 miles engine light on. Code is obdIIpo449b any idea what it is the car runs great


CODE PO449 - EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION.SOUND LIKE EVAP VENT SOLENOID HAS FAILED OR A BLOWN EVAP VENT SOLENOID FUSE.

Aug 28, 2009 | 2005 Chevrolet Cobalt

2 Answers

Bad Evap Vent Solenoid


On the passenger side of the car there it a canister next to the gas tank (right infront of the rear wheel) it's right there. You don't need to pull the wheels to access it.

May 14, 2009 | 2006 Pontiac G6

1 Answer

'99 olds 88 diagnosed PO 446 evap vent control problem


Your code means:

P0446 onepx.gif EVAP Canister Purge Vent Blocked

Some of the possible causes:

EVAP vent fresh air hose is clogged, kinked or restricted
EVAP Vent solenoid is contaminated, damaged or has failed
FTP sensor is out-of-calibration, damaged or "skewed"
PCM has failed

All tough thing for a lay person to check. You don't have to take it to the dealer, any repair garage that has the proper equipment can fix this for you.

Feb 09, 2009 | 1999 Oldsmobile 88

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