1998 Infiniti I30 Trouble Code P1447

1998 Infiniti I30 Trouble Code P1447 - EVAP System

Hello. Check engine light trouble code 1447, Evap purge control valve or related. I've studied my brain off on this but what chance does a novice have of finding the exact cause for this problem? Would a smog check station have the diagnostic machine that could pinpoint what needs to be done? Need to pass smog check. California is a killer not just for having smog but for preventing it too! Vapor Canister and hoses look good. No cracks or leaks on visual inspection. Evap canister purge control valve...evap canister purge volume control valve...I'm lost. Thank you for any advise you can give.

Answer:

Trouble Code P1447 - Evaporative Emission Control System Purge Flow Monitor

Possible faults which could cause your Infinity to set OBDII trouble code P1447

- EVAP canister purge control solenoid valve stuck
- EVAP control system pressure sensor and/or circuit fault
- Loose, disconnected or improper connection of vapor hoses
- Defective EVAP canister
- EVAP canister purge volume control solenoid valve circuit
- Blocked purge port

- Closed throttle position switch

Insure your Infiniti's EVAP purge solenoid is functioning properly. By applying 5 - 9 volts you should here a click indicating the solenoid is working. The system sets a P1447 when there is an electronic problem involving one of the EVAP sensors or solenoid, or when the EVAP control system finds a leak between intake manifold and your Infiniti's Charcoal Canister.

Note also the EVAP system only purges when you're driving and on the throttle. If the TPS (Throttle Position Switch) is defective the ECU will set a P1447.

posted by SmogTips Support