The contact owns a 2002 Nissan Frontier. While driving approximately 30 mph, the engine warning indicator continuously illuminated until the engine was turned off. On a separate occasion the vehicle jerked violently with a reduction in the engine power. The vehicle was taken to an independent mechanic where the knock sensor, mass air flow sensor and four oxygen sensors were replaced. The failure continued to occur after the repair was performed. The vehicle was taken back to the independent mechanic for the second time and the wiring harness was replaced. The manufacturer was notified of the problem and they informed the contact that the wiring harness connectors exhibited corrosion as a result of not being weatherproof during production. The approximate failure mileage was 70,000. Updated 04/10/12 the consumer stated he spent close to $2000 repairing the vehicle. The check engine light continued to illuminate, after replacing the O2 sensors four times. Also, the wiring harness had to be replaced because when the vehicle was manufactured it was not weather proof which caused corrosion in the wires, which sent incorrect signals to the vehicle's computer. The consumer no longer owns the vehicle. Updated 05/31/12

- Jensen Beach , FL, USA

The contact owns a 2002 Nissan Frontier. The contact stated that the exhaust manifold was fractured and sending CO2 through the vents while driving 25 mph and above. The contact took the vehicle to the dealer and the dealer replaced the passenger side exhaust manifold. After the repairs, the driver side exhaust manifold fractured and the contact took the vehicle back to the dealer. The dealer advised that it was common for the manifold to fracture in the particular year, make and model. The contact did not replace the driver side exhaust manifold. The failure mileage was 150,000.

- Harleyville, SC, USA

Smelling exhaust fumes in my pickup cab. I had a new exhaust system installed and check by a mechanic. It was ok. He said I have a cracked exhaust manifold. I checked on the www and a lot of people are talking about this same problem. My truck is a Nissan Frontier year 2002.

- Great Meadows, NJ, USA

While driving the vehicle at an undetermined speed the vehicle stalled, causing the consumer to pull off the road. The consumer took the vehicle to a mechanic. Please add any additional information.

- Johnson City, TN, USA