engine check light

[bigmerc'03]

tonite on the way home from wallyworld (wal-mart) my car threw a code P0190 chart said Fuel Rail Pressure Sensor Circuit Malfunction i reset it and tomorrow i will see if it happens again if it does any help from the group will be great.......

[MitchB]

tonite on the way home from wallyworld (wal-mart) my car threw a code P0190 chart said Fuel Rail Pressure Sensor Circuit Malfunction i reset it and tomorrow i will see if it happens again if it does any help from the group will be great.......

I had this same code occur once last May or June. Without looking, I recall this indicates the voltage output from the ECM to the rail sensor dropped below the allowable limit. This would indicate either a circuitry (wiring) problem or a failed (shorted) sensor. I cleared the code and it has not come back. The CCM (constant control monitor) has to detect this fault twice before it will set a MIL.

Mitch