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1996 Mercury Grand Marquis GS 4.6L MIL Lamp on
hi,car came in mil on no running problems,dts p0420 stored. tested & replaced b1s2 ho2s for weak heater. cleared but had no time to verify cat monitor ran. returned 1 month later mil on,dtc p0420 stored, no running problem. freeze frame both trips gave no fuel...
FIX posted 4/24/2001
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Message Closed
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| VIN | 2MELM74W1T |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Not Applicable |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed
Vehicle Data
1996 Mercury Grand Marquis GS
| VIN | 2MELM74W1T |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Not Applicable |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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