Patrick Wong
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Apr 23, 2018 at 11:18 PM
Mar 8, 2008
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Green Valley, AZ
Pricing management

Patrick Wong

DIY Enthusiast, Male, from Green Valley, AZ

Paige - what link is that? Dec 15, 2015

Patrick Wong was last seen:
Apr 23, 2018 at 11:18 PM
    1. JIM777
      Hi Patrick I was reading some of your post to a fella that had a code problem POA A6 and attached to it was the 526 code as you troubleshoot it you were looking for another code mine also has the 612 code is wondering if you might be able to help me determine what that is thanks have a great day
      1. Patrick Wong
        Patrick Wong
        P0AA6, info code 612 means the ground fault is within the traction battery. Look for a leaking battery module first.
        Aug 15, 2017
    2. stanny101
      Am experiencing a P0420 code and have replaced
    3. longtimetoyota917
      Patrick sorry to bother you, a problem came up on my 2007 prius in this thread: and ended with a: P0AA6 code, well (i think) i should have the hv cells tested by someone reputable, bad ones changed and the battery balancecharged after. I was curious if you knew a shop who can work with me on a budget here in Los Angeles.
      1. Patrick Wong
        Patrick Wong
        I do not have personal experience with any independents in southern CA. Good luck with your choice.
        Sep 19, 2016
      2. longtimetoyota917
        Thank you. If you can check my thread to see if u have any other suggestions then what has been offered Id appreciate it- you definitely seem like the go-to guru for this site. Thanks again for the help.
        Sep 20, 2016
    4. Patrick Wong
      Patrick Wong
      Paige - what link is that?
    5. Paige
      Ok, can I write you here? I just checked your engine coolant link and it took me to a website for a LandRover coolant guage.
    6. Patrick Wong
      Patrick Wong
      P3130: check the inverter coolant pump which probably is not working. P0303: check for misfire in cyl 3
    7. 131
      The warning lights went off again in 2003 Prius. O'Reilly's, found codes P3130 & P0303. One code states misfiring on all cylinders and no info on other code. Dealership won't give any information about codes.
      Just got an oil change @ dealership about two weeks ago; they didn't notice any problems.
      I have a little over 130k miles. Thanks.
    8. tigerpilot
      '09 Had coolant valve replaced under recall 20K miles ago. Now throwing code again. Going to replace valve myself. Is there a way to NOT have to drain coolant. Maybe pinching off the hoses. I have a cable hose clamp pliers.
      Thanks, Don [email protected]
      1. Patrick Wong
        Patrick Wong
        Before you replace the valve, make sure there is no air in the system, which might cause the DTC . Yes, you could pinch off hoses.
        Jun 27, 2015
    9. Caleb302105
      Hi Patrick,
      I have a 2006 Prius that I suspect may have an A/C problem. You have given me some great suggestions in the past when it came to the coolant heat storage valve. I was hoping that you could take a look at my original post here on PRIUSchat and tell me if perhaps you have any ideas. Here's the link. Thank you for your help.
    10. ls40095
      Ok thanks
    11. Patrick Wong
      Patrick Wong
      I believe it is necessary to remove the inverter first.
    12. ls40095
      I just got a call to sell a transaxle from my gen 2 parts car. Do I have to pull the inverter first or can I just unbolt the transaxle and the axles and pull it from the bottom? I sold the hybrid battery and ECUs last week so I do t see a problem with voltage. Thanks
    13. Patrick Wong
      Patrick Wong
      Hi Priscilla, thanks for your msg. Given your Phoenix location it would be inconvenient for either you or me, if I serviced your car.
    14. PriscillaPrius
    15. satwood
      Patrick, Can you repost the link to your thread that describes how to cycle the electric CHRS pump from the relay panel? I'm replacing the radiator in my 2007 and I can't find that tidbit I used the last time I changed the coolant. - Thanks Steve
    16. Patrick Wong
      Patrick Wong
      I haven't been able to get the generic function to work also.
    17. SWprius08
      I am new to mini vci. From the main page of techstream when I click on "Generic OBD II", the software tries to connect to the vehicle and then returns with an error "Techstream (S321-99), Cannot establish communication with ECU", other than this when I click on "Connect to Vehicle" directly to access live data it works ok. Is this Generic OBD II suppose to work? Do I have a faulty cable that I should get replaced?
    18. brokerdelete
      Weeping water pump. Replaced it, attempt to purge the air. Drive 150 miles, hear the sloshing in heater core again, overflow tank overflowing. Seems to continue to build pressure after ICE is shut down. No oil in water or visa versa. Gasses escaping into water jacket? Hose from neck to overflow tank, good and tight, no obstructions. Why would coolant NOT return from tank to radiator after ICE's off?
      1. Patrick Wong
        Patrick Wong
        1. Replace the radiator cap with the correct Toyota part.
        2. Purge the air out of the system again so the heater core is quiet and the cabin heater works.
        3. If you still have problems, seek professional help to inspect your cooling system and figure out what is going on. Good luck.
        Jan 6, 2015
    19. msfreeh
      Patrick I just created a new thread on my 2003 Prius re:
      replacing rear shock
      I cannot locate the two nuts holding the shock on from
      inside the vehicle.
      I have removed seats and black plastic ventilation.
      Cannot see the top of the shock.
      Can you help?
      1. Patrick Wong
        Patrick Wong
        You need to remove the trunk lining that covers the traction battery. When you can see the battery you also should be able to see the tops of the shock mount hardware, on either side of the battery.
        Nov 11, 2014
      [email protected]
      Hello...I posted concerning code POA9B and you responded....thank you very much. I have the battery exposed and now know where the ECU is. My questions are: 1. should I just go ahead and change this unit for a used one, and will this erase the code?
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  • About

    Green Valley, AZ
    Pricing management
    2015 Prius
    Grew up in Honolulu, HI. Attended college and graduate school in CA, work in tech industry.


    2015 Prius
    2007 Prius
    2007 Jaguar XK
    2006 Highlander Hybrid 4WD-i
    2004 Prius (sold Feb. 2017, 231K miles)
    2001 Prius (sold Feb. 2008, 75K miles)
    2000 Ford Mustang GT conv.