06 Taurus Misfire Dark Smoke, Engine Light On, 9 Codes

Asked by May 02, 2010 at 11:22 PM about the 2006 Ford Taurus SE

Question type: Maintenance & Repair

I have a 06 Taurus SE, 3.0L 12v, Engine Code U. 40K miles. Bought at 27K miles. A few days ago, I drove 3 miles to a store, turned off the engine and this happened.

It will start, but the engine vibrates and sputters like misfire. Engine light is one. Hit on the gas and the engine is not running faster or responding. The car would not go either. There is also dark smoke coming out of the tail pipe.

This car has a history of hard cold start. I had to try 2-4 times to start the engine in the morning. Meanwhile, I had to hit on the gas pedal hard while cranking the engine. I have got 9 codes:

1. P0190: Fuel Rail Pressure Sensor Circuit Malfunction, or Fuel Rail Pressure Sensor "A" Circuit

2. P0191: Fuel Rail Pressure Circuit Range/Performance, or Fuel Rail Pressure Sensor "A" Circuit Range/Performance

3. P2196: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1

4. P2198: O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1

5. P0190(pd): Fuel Rail Pressure Sensor Circuit Malfunction

6. P0191(pd): Fuel Rail Pressure Circuit Range/Performance

7. P0300(pd): Random/Multiple Cylinder Misfire Detected

8. P2196(pd): Undefined code

9. P2198(pd): Undefined code

Any idea what could cause the problem? How to find out which part to replace? Thanks a lot

1 Answer

3,535

In thiniking through the data above my first reaction would be to test the fuel pressure sensor and/or the regulator. Am thinking if the sensor is dead the rail would get full pressure (causing rich) or the regulator not working could cause same. Keep us posted!

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