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1999 Chevrolet Tahoe 5.7L MIL Lamp on
Got a stumper here. Truck came in with the MIL on. Found code 174 (fuel trim lean limit reached for bank 2). Immediately went to scan O2's. All of them read fine above idle, but at idle, the downstream O2 for bank 1 would go high and stay high. Whereas the dow...
FIX posted 5/20/2002
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Message Closed w/FIX
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Related Documents & Media | VIN | 3GNEK18R0X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 171 | Fuel trim lean limit reached - Bank 1 |
| 174 | Fuel trim lean limit reached - Bank 2 |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Tahoe
| VIN | 3GNEK18R0X |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / TBI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 171 | Fuel trim lean limit reached - Bank 1 |
| 174 | Fuel trim lean limit reached - Bank 2 |
Video