P0446 · 厂商技术资料

CHEVROLET, GMC · 2025-03-13

This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.

VOLVO · 2025-01-27

This is a Technical Journal: Check Engine Light, DTC P044671. Do not replace any parts. This is not a hardware-related fault

CHEVROLET, GMC · 2024-10-07

This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.

VOLVO · 2024-09-21

This is a Technical Journal: Check Engine Light, DTC P044671. Do not replace any parts. This is not a hardware-related fault

CHEVROLET, GMC · 2024-02-26

This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.

CHEVROLET, GMC · 2023-09-20

This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.

CHEVROLET, GMC · 2023-06-19

This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.

CHEVROLET · 2020-02-11

This technical bulletin provides a procedure to correct a condition of an MIL Illuminated with DTC P0446 Set.

CHEVROLET · 2019-11-21

This technical bulletin provides a procedure to correct a condition of an MIL Illuminated with DTC P0446 Set.

ISUZU · 2019-09-26

SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING, SWEEPING, OR OFF-ROAD TYPE APPLICATIONS, MAY COMMENT ABOUT THE ILLUMINATION OF THE CHECK ENGINE LIGHT, WITH ONE OR MORE OF THE FOLLOWING DTC'S SET: P0449 (EVAPORATIVE EMISSION VENT SOLENOID VALVE CONTROL CIRCUIT LOW VOLTAGE), P0446 (EVAPORATIVE EMISSION VENT SYSTEM PERFORMANCE) AND P0455 (EVAPORATIVE EMISSION SYSTEM LARGE LEAK DETECTED). DIRT AND DUST INTRUSION INTO THE EVAP CANISTER VENT SOLENOID VALVE MAY CAUSE THIS CONDITION. IF NORMAL DIAGNOSTICS FOR ANY OF THE ABOVE DTCS DETERMINES THE EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE HAS FAILED, REPLACE THE EXISTING EVAP CANISTER VENT SOLENOID VALVE (THE "VALVE") WITH A NEW ASSEMBLY. THEN COVER THE VALVE AND RELOCATE IT WITH THE UPDATED…

BUICK, CADILLAC, CHEVROLET, GMC · 2019-07-11

Some customers may note a Check Engine Light related to the evaporative emission canister performance. Technicians may find the following DTCs set: • P0442 • P0455 • P0446 • P0449 • P0498 This engineering informational bulletin is requesting information from the field on warranty parts for complete canister assemblies that apply to the DTC codes specified and has leak conditions. Engineering is determining a root cause and developing a Field Fix.

BUICK · 2019-04-01

The Preliminary Information communicates that a vehicle may come into the dealer with a SES light on and code P0446 set in Engine Control Module. Dealer is instructed to inspect the EVAP air inlet pipe to the EVAP canister for dust intrusion. If dust intrusion is found dealer is instructed to clean the air inlet pipe and filters and replace the EVAP canister.

CHEVROLET · 2018-03-01

This engineering information bulletin is requesting information from the field on vehicles that have the condition of Malfunction Indicator Illuminated with DTC P0446 Set.

BUICK, CHEVROLET · 2017-11-29

This technical bulletin provides a procedure to replace the evap canister for vehicles with the condition of Malfunction Indicator Lamp (MIL) Illuminated with DTC P0446 or P0455 Set due to spiders laying a nest within the canister.

BUICK · 2017-09-27

The Preliminary Information communicates that avehicle may come into the dealer with a SES light on and code P0446 set in Engine Control Module. Dealer is instructed to inspect the EVAP air inlet pipe to the EVAP canister for dust intrusion. If dust intrusion is found dealer is instructed to clean the air inlet pipe and filters and replace the EVAP canister.

BUICK, CHEVROLET · 2017-02-28

This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port.

BUICK, CHEVROLET · 2017-01-26

This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port.

BUICK, CHEVROLET · 2017-01-11

This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port.

CHEVROLET, GMC · 2015-04-09

This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) illuminated, fuel tank hard to fill, and technicians finding one or more DTCs: P0442, P0446, P0455 or P0449 set.

CHEVROLET, GMC · 2010-09-01

CHEVROLET/GMC: CHECK ENGINE LIGHT ON, FUEL TANK HARD TO FILL, DTCS P0442, P0446, P0455 OR P0449 SET (REPLACE EVAPORATIVE EMISSION (EVAP) VENT VALVE SOLENOID ASSEMBLY AND ADD/RELOCATE FILETER BOX USING SERVICE KIT). *PE

CHEVROLET, GMC, PONTIAC · 2010-09-01

CHEVROLET/GMC/PONTIAC: INTERMITTENT MIL/CHECK ENGINE LIGHT ON, DTC P0442, P0446, P0451, P0452, P0453, P0454 OR P0455 (INSTALL FUEL TANK PRESSURE SENSOR COVER). THIS CONDITION MAY BE CAUSED BY NORMAL WATER ACCUMULATION OR CONDENSATION BLOCKING THE AIR REFERENCE PORT OF THE FUEL TANK PRESSURE SENSOR. *PE UPDATED 2/07/11. *PE UPDATED 2/25/11. *PE

CHEVROLET, GMC · 2010-02-01

CHEVROLET:GMC: ENGINEERING INFORMATION-FUEL TANK PRESSURE SENSOR, DTCS P0446, P0451 OR P0454 SET. GMC ENGINEERING IS ATTEMPTING TO DETERMINE THE ROOT CAUSE OF THE ABOVE CONCERN. *PE

CHEVROLET, GMC · 2010-01-01

SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING OR MINING OFF-ROAD TYPE APPLICATIONS, MAY COMMENT ABOUT THE ILLUMINATION OF THE INSTRUMENT PANEL SES LIGHT, WITH DIAGNOSTIC TROUBLE CODE P0446 SET. *TT UPDATED 7/11/08. *NJ UPDATED 11/5/10. *PE

CHEVROLET, SATURN · 2009-07-01

CHEVROLET/SATURN: DIFFICULTY FILLING FUEL TANK, MIL/SES LIGHT ILLUMINATED DTC P0446 - EVAPORATIVE EMISSIONS (EVAP) VENT SYSTEM PERFORMANCE (INSPECT/CLEAN EVAP CANISTER VENT VALVE SOLENOID AND INSTALL SCREEN). *PE

CADILLAC, CHEVROLET, GMC · 2009-04-01

DIAGNOSTIC INFORMATION ON MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED WITH DTCS P0442,P0446, P0451, P0452, P0453, P0454, P0455 AND REPLACEMENT OF FUEL TANK PRESSURE (FTP) SENSOR/MODULE. *PE

TOYOTA · 2006-04-11

M.I.L. ON DTC P0440, P0441, P0442, P0446, AND/OR P0456 - FUEL FILLER TUBE IMPROVEMENT. *TT

CHEVROLET, SATURN · 2005-09-01

FUEL NOZZLE SHUTS OFF INTERMITTENTLY OR PREMATURELY DURING FUEL FILL AND/OR SES LAMP ON WITH DTC P0446 EVAP VENT SYSTEM PERFORMANCE SET. *TT

TOYOTA · 2005-02-16

MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0446 (EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL MALFUNCTION) (ONLY). *TT

TOYOTA · 2004-11-12

REPAIR MANUAL SUPPLEMENT: LEV II EVAP SYSTEM CHECK - DIAGNOSTIC TROUBLE CODE (DTC) P0441, P0442, P0446, P0451, P0452, P0453, P0455 AND P0456. *NM

UNKNOWN · 2004-08-01

DIAGNOSTIC TROUBLE CODE P0446 (RESTRICTED/BLOCKED EVAP VENT PATH) SET, SERVICE ENGINE SOON (SES) LAMP ILLUMINATED. 2000 - 2003 CADILLAC, CHEVROLET AND GMC FULL-SIZE UTILITY MODELS. *TT