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1997 Mercury Grand Marquis LS 4.6L MIL Lamp on
Posted to Ford Driveability on 3/20/2002 21 Replies

Car has no driveability symptoms. No misfire [...] comes on and goes off. Code P0430 is in memory codes(continuous). Performing circuit test HF,testing ends at step 10, "no indication of exhaust leak or restriction has been detected and testing is complete." R...

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Message Closed w/Summary

car Vehicle Data

1997 Mercury Grand Marquis LS

VIN 2MELM75W1V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0430Catalyst Efficiency Below Threshold (Bank 2)
Message Closed w/Summary

car Vehicle Data

1997 Mercury Grand Marquis LS

VIN 2MELM75W1V
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0430Catalyst Efficiency Below Threshold (Bank 2)