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1997 Chevrolet K3500 7.4L Excessive Emissions, MIL Lamp on
Post o2 sensors were replaced, 4 wire sensors and both are stuck at .438, heater circuits are o.k. tested all o2 sensor wires fron computer to o2 sensor connectors by transfercase, no shorts or opens. suspect an ecm problem. Any help from you GM Techs. Thanks.
FIX posted 8/11/2004
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Related Documents & Media | VIN | 1GBJK34J2V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Port Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0140 | Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity Detected |
| P0160 | Heated Oxygen Sensor (Bank 2 Sensor 2) Insufficient Activity Detected |
Message Closed
Vehicle Data
1997 Chevrolet K3500
| VIN | 1GBJK34J2V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Port Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0140 | Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity Detected |
| P0160 | Heated Oxygen Sensor (Bank 2 Sensor 2) Insufficient Activity Detected |
Video