Fuel Rail Pressure Transducer Rationality.

Seems to be a common fault. My truck got the code at 11,000 miles.
Dealer (Massey Yardley, Stuart, FL) fixed it quickly with an ECM flash to 18-032-06

Tech said he has replaced two tranducers recently, but mostly flashes cure the problem.

Bob

 

I had that code several times. First time at 1K they replaced some valve, I did not get the name of it but it has to do with the rail pressure, think it was the relief valve. Second time at about 5K, they did a flash. Third time at about 7K, they replaced a transducer and I have not had the code/problem since. Truly a PITA making all those trips to the dealership.

CD

 

pressure relief valve.

 

There is a flash update for PCM for code P0191.