Contour Enthusiasts Group Archives Forums General Troubleshooting p1451 code

i went to autozone and had my car tested for free like everyone said to dothen i took it to another place and also had it inspected and the same problem had appeared. it is the p1451 code which is evap emmision control sys vent control valve circuit (cannister vaccuum celenoid) has anyone ever had this problem with their contour. please write back if you kjnow how to fix it or have advice where i should take it in to.

thanks alot
ryan

Yeah, I had this same code after my car was serviced awhile ago. Have you messed around with any wires in the trunk lately?

HX65 DTC P1451: CHECK VPWR VOLTAGE TO CV SOLENOID
Diagnostic Trouble Code (DTC) P1451 indicates that Self-Test has detected a canister vent (CV) solenoid circuit failure.

Possible causes:

VPRW circuit open.
CV circuit open.
CV circuit shorted to PWR GND.
CV circuit shorted to PWR.
Damaged CV solenoid.
Damaged PCM.

1) Key off. Disconnect CV solenoid.
2) Key on, engine off.
3) Measure VPWR circuit voltage at CV solenoid harness connector. Key off. Was voltage greater than 10.5 volts?

No - REPAIR open circuit.
Yes - HX66 CHECK CV SOLENOID RESISTANCE
Measure CV solenoid resistance.
Is resistance between 48 and 65 ohms?

No - REPLACE damaged CV solenoid.
Yes - HX67 CHECK FOR OPEN CV CIRCUIT BETWEEN PCM AND CV SOLENOID

There were a set of wires that was some how cut by Ford service tech for some unknown reason. I managed to just solder the wires back together and the check engine light went off.