P0420 Jeep - would this code cause the jeep to jolt.

Question

Jolts at cruising speed around 30 mph. I accelerate or decelerate the jolting a stops. I replaced the spark plugs.

Answer 1

P0420 Catalytst below threshold Bank 1

No this would not cause the vehicle to jolt. The purpose of the CK ENG LT is to protect the catalytic convertor, and the catalytic convertor is to protect the enviroment from harmfull emission emiited into the atmosphere. The jolting can contribute to P0420. If your dealing with a misfire condition. the ignition coil . , the sparkplug wire , they should be check. what you have is a hesitation of the vehicle.