4.0

definitely annoying
Typical Repair Cost:
No data
Average Mileage:
52,000 miles
Total Complaints:
1 complaints

Most common solutions:

  1. replace catalytic converter (1 reports)
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This problem may be covered under warranty. Ask your Jeep dealer.

problem #1

Nov 012011

Grand Cherokee Laredo 3.7L

  • Automatic transmission
  • 52,000 miles

Car drove fine, but intermittently threw P0420 and P0430. Dealer would reset, say it didn't come back on while they had it, and send me home. Light would come back on by the time I got home. After 3 trips dealer replaced one cat. No light for several weeks, then P0430 came on. Dealer then replaced that cat. Cats covered under 80k/8 yr federal emissions warranty.

- Sully S., Cinn, NJ, US