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1994 Buick LeSabre Custom 3.8L MIL Lamp on
Hi there, Anybody seen seen these two codes together, both before and after replacement of the EGR sensor/valve assembly? The TPS was replaced previous for a different fault and at that time the 401 & 406 codes were present but would not reset after cleared. W...
FIX posted 1/8/2001
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| VIN | 1G4HP52L8R |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | CA |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| 401 | EGR Flow Failure |
| 406 | EGR Pintle Position Error |
Message Closed w/FIX
Vehicle Data
1994 Buick LeSabre Custom
| VIN | 1G4HP52L8R |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | CA |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| 401 | EGR Flow Failure |
| 406 | EGR Pintle Position Error |
Video