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| This is a discussion on Triangle/Check Engine/"Problem" - 2005 ECU replacement p0ac1 within the Gen II Prius Care, Maintenance and Troubleshooting forums, part of the Gen II (2004-2009) Toyota Prius Forums category; Hello everyone, I searched and searched but was unable to generate a hit with the code or find info on ... |
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Triangle/Check Engine/"Problem" - 2005 ECU replacement p0ac1
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07-22-2009, 04:20 PM
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| Junior Member  Join Date: Jan 2008 Location: Central WI
Posts: 10
My Car: 2005 Prius Model: Package: Base Thanks: 0
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Friends: 0 |  Triangle/Check Engine/"Problem" - 2005 ECU replacement p0ac1 Hello everyone, I searched and searched but was unable to generate a hit with the code or find info on replacing the ECU... Yesterday afternoon I had both the triangle and the check engine lights come on in my 2005 Prius (109k miles), in addition to the hybrid icon and "Problem" on the MFD. I took it in today and they gave me a code of P0AC1 with a diagnosis of needing a new battery ECU. They tested the current sensor and harnesses and it tested okay. The part needs to be shipped up from Chicago and that'll take a few days. They're quoting me $838, including the hour and a half labor. Three weeks ago, after leaving the car sit for a day, I tried to start it and it was dead. So I jumped it and took it in for a 12v battery replacement since I was still on the original ($170 with labor.) I also noticed that I posted a year ago that I had almost the same thing happen...with code P0AC0.
__________________ Steven Page of the Barenaked Ladies has seen the future and it ain't sweet, even though it involves sugar: "We'll need the last gallon of gasoline so we can go buy the last Krispy Kreme doughnut." |
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07-22-2009, 04:56 PM
| #2 |
| Senior Member  Join Date: Oct 2008 Location: UK
Posts: 216
My Car: 2008 Prius Model: Package: T Spirit Thanks: 3
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Friends: 0 | Re: Triangle/Check Engine/"Problem" - 2005 ECU replacement p0ac1 Was the Battery ECU replaced on the previous repair? These are a brief description of DTCs. P0AC0 - Battery current sensor malfunction · HV battery assembly (wire harness or connector) · Battery current sensor · Battery ECU P0AC1 Low voltage in battery current sensor · HV battery assembly (wire harness or connector) · Battery current sensor · Battery ECU |
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| 2005, ecu, engine or problem, p0ac1, replacement, triangle or check |
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