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2001 Cadillac Seville STS 4.6L MIL Lamp on
Applied scan tool and operated AIR pump while monitoring O2 sensor data. Heard AIR pump turn on and saw Bnk1 Sensor1 O2 drop too 30 mV, other O2 sensors dropped to or around 0 mV. According to diagnostic chart system is working OK as long as B1S1 O2 drops belo...
Summary posted 8/13/2013
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Message Closed w/Summary
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Related Documents & Media | VIN | 1G6KY54991 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Misc. | A.i.r.system Issue |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P1415 | Secondary Air Injection System (Bank 1) |
Message Closed w/Summary
Vehicle Data
2001 Cadillac Seville STS
| VIN | 1G6KY54991 |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Misc. | A.i.r.system Issue |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
| P1415 | Secondary Air Injection System (Bank 1) |
Video