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1996 Ford Explorer XL 4.0L MIL Lamp on, No Symptoms
These codes appear sometimes after several months with no accompanying symptoms. Testing reveals system operating normally. No cause for MIL light is found. Has anyone come across these codes reappearing?
FIX posted 3/5/2001
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Message Closed
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Related Documents & Media 
| VIN | IFMDU34XXT |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / MPFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, No Symptoms |
| Occurs | Intermittently |
Trouble Codes
| P0040 | HO2S-11 & HO2S-21 Harness Connectors Reversed |
| P1127 | Long Term Fuel Trim Multiplier System Too Rich |
Message Closed
Vehicle Data
1996 Ford Explorer XL
| VIN | IFMDU34XXT |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / MPFI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, No Symptoms |
| Occurs | Intermittently |
Trouble Codes
| P0040 | HO2S-11 & HO2S-21 Harness Connectors Reversed |
| P1127 | Long Term Fuel Trim Multiplier System Too Rich |
Video