CHEVROLET, GMC
Reported code forms P0446
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.
HomeP0446 · Manufacturer communications
P0446 · Manufacturer communications
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
VOLVO
Reported code forms P044671
This is a Technical Journal: Check Engine Light, DTC P044671. Do not replace any parts. This is not a hardware-related fault
CHEVROLET, GMC
Reported code forms P0446
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
Reported code forms P044671
This is a Technical Journal: Check Engine Light, DTC P044671. Do not replace any parts. This is not a hardware-related fault
CHEVROLET, GMC
Reported code forms P0446
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
Reported code forms P0446
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
Reported code forms P0446
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
Reported code forms P0446
This technical bulletin provides a procedure to correct a condition of an MIL Illuminated with DTC P0446 Set.
CHEVROLET
Reported code forms P0446
This technical bulletin provides a procedure to correct a condition of an MIL Illuminated with DTC P0446 Set.
ISUZU
Reported code forms P0446
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…
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0446
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…
BUICK
Reported code forms P0446
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…
CHEVROLET
Reported code forms P0446
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
Reported code forms P0446
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…
BUICK
Reported code forms P0446
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…
BUICK, CHEVROLET
Reported code forms P0446
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…
BUICK, CHEVROLET
Reported code forms P0446
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…
BUICK, CHEVROLET
Reported code forms P0446
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…
CHEVROLET, GMC
Reported code forms P0446
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…
CHEVROLET, GMC
Reported code forms P0446
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
Reported code forms P0446
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…
CHEVROLET, GMC
Reported code forms P0446
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
Reported code forms P0446
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…
CHEVROLET, SATURN
Reported code forms P0446
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
Reported code forms P0446
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
Reported code forms P0446
M.I.L. ON DTC P0440, P0441, P0442, P0446, AND/OR P0456 - FUEL FILLER TUBE IMPROVEMENT. *TT
CHEVROLET, SATURN
Reported code forms P0446
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
Reported code forms P0446
MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0446 (EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL MALFUNCTION) (ONLY). *TT
TOYOTA
Reported code forms P0446
REPAIR MANUAL SUPPLEMENT: LEV II EVAP SYSTEM CHECK - DIAGNOSTIC TROUBLE CODE (DTC) P0441, P0442, P0446, P0451, P0452, P0453, P0455 AND P0456. *NM
UNKNOWN
Reported code forms P0446
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