eddiek12

Hey guys

My 2008 tsp has thrown a p0498 which is low voltage detected for the purge control valve. I decided to replace the purge valve which is located next to the throttle body. This did not fix my issue. Has anybody else seen and fixed this issue?

Thanks for your help

eddiek12

Its a 2008 tsx not tsb lol

Simba91102

How do you know it hasn't corrected the problem? Are you still getting the code? Did you disconnect the battery to clear the code?

eddiek12

Yup, reset it using my scanner. It came back. Pulled the battery and let it sit for 15 mins. Connected it, and the light came back the second the car was started

TexasHonda

P0498 is evap cannister vent shut valve circuit has detected low voltage.

Replacing VSV likely eliminates that as the circuit fault. That leaves connector, wiring, or PCM. Next step is to disconnect PCM connector E and VSV connector. Check for open or short in both wiring legs from connector E to VSV connector by shorting VSV connector pins together to verify integrity. If not, then find which leg has open by sequentially shorting each wire to ground and checking.

If a wiring fault (open or short) is determined, it must be located and repaired.

If all wiring checks are good, the PCM is source of fault and must be replaced.

An Acura shop manual will be necessary for wiring colors, PCM location, pin arrangements, etc.

good luck