Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - OBD System Monitor Operation
1999 Buick LeSabre V6-3.8L VIN KSECTION Engine Controls - OBD System Monitor Operation
Bulletin No.: 05-06-04-028
Date: April 18, 2005
INFORMATION
Subject:
OBD I/M System Monitors Not Supported
Models:
1999-2000 Buick Century, LeSabre, Park Avenue, Regal, Riveria
1999-2000 Chevrolet Camaro, Lumina, Malibu, Monte Carlo, Venture
2000 Chevrolet Impala
1999 Oldsmobile Cutlass, Eighty Eight
1999-2000 Oldsmobile Alero, Intrigue, Silhouette
1999-2000 Pontiac Bonneville, Firebird, Grand Am, Grand Prix, Montana, Trans Sport
with 3.1L, 3.4L, 3.5L or 3.8L V-6 Engine (VINs J, E, H, K, 1 - RPOs LG8, LA1, LX5, L36, L67)
A scan tool system status display will indicate whether the major OBD monitors are Complete, Not Complete or Not Supported.
OBD system monitors are grouped as those that run continuously during a trip or those that do not run continuously during a trip (non-continuous). Continuously running OBD system monitor status should always indicate that the monitor is complete.
Several U.S. states require that the above vehicle's major On-Board Diagnostic (OBD) monitors have completed prior to an OBD I/M emission inspection. Some areas may reject a vehicle from testing if certain non-continuous OBD monitors are not complete.
When scanning the system status on the vehicles identified above, it may have been noted that the scan tools or emission test equipment will incorrectly indicate the OBD system status as Not Supported for the continuously running monitors (Misfire, Fuel System, and Comprehensive Components). There is not a fault with the diagnostic system or the vehicle and repairs should not be attempted.
Further, continuous monitor system status for gasoline engines is not considered when preparing for an OBD I/M emission inspection. A vehicle with the MIL commanded on for a continuous system monitor, or for any reason, should be serviced.
Disclaimer
Date: April 18, 2005
INFORMATION
Subject:
OBD I/M System Monitors Not Supported
Models:
1999-2000 Buick Century, LeSabre, Park Avenue, Regal, Riveria
1999-2000 Chevrolet Camaro, Lumina, Malibu, Monte Carlo, Venture
2000 Chevrolet Impala
1999 Oldsmobile Cutlass, Eighty Eight
1999-2000 Oldsmobile Alero, Intrigue, Silhouette
1999-2000 Pontiac Bonneville, Firebird, Grand Am, Grand Prix, Montana, Trans Sport
with 3.1L, 3.4L, 3.5L or 3.8L V-6 Engine (VINs J, E, H, K, 1 - RPOs LG8, LA1, LX5, L36, L67)
A scan tool system status display will indicate whether the major OBD monitors are Complete, Not Complete or Not Supported.
OBD system monitors are grouped as those that run continuously during a trip or those that do not run continuously during a trip (non-continuous). Continuously running OBD system monitor status should always indicate that the monitor is complete.
Several U.S. states require that the above vehicle's major On-Board Diagnostic (OBD) monitors have completed prior to an OBD I/M emission inspection. Some areas may reject a vehicle from testing if certain non-continuous OBD monitors are not complete.
When scanning the system status on the vehicles identified above, it may have been noted that the scan tools or emission test equipment will incorrectly indicate the OBD system status as Not Supported for the continuously running monitors (Misfire, Fuel System, and Comprehensive Components). There is not a fault with the diagnostic system or the vehicle and repairs should not be attempted.
Further, continuous monitor system status for gasoline engines is not considered when preparing for an OBD I/M emission inspection. A vehicle with the MIL commanded on for a continuous system monitor, or for any reason, should be serviced.
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.