P1121 error is it safe to drive?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Sudo, Jun 1, 2020.

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  1. Sudo

    Sudo New Member

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    Hello Prius owners and mechanics,

    I’m new 2008 Prius owner. Recently, the check engine light came up. Upon quick pc scan, We found p1121 error code.

    Is it safe to drive to the nearest shop (250 miles)? How dangerous is the issue?
     

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  2. SFO

    SFO Senior Member

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    Welcome to PriusChat!!

    You should be safe if the only known OBD2 codes (DTCs) are P1121 and P1150. Please confirm that the OBD2 code reader you're using is fully compatible with toyota hybrids, as not all code readers are.

    Here is the work up for DTC P1121 : https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Repair%20Manual/04pruisr/05/2054m/cip1121a.pdf

    Here is the work up for DTC P1150 : https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Repair%20Manual/04pruisr/05/2054m/cip1150a.pdf

    If replacing, there have been reported issues with aftermarket ”Coolant Flow Control Valve” parts leaking, find one with a warranty if possible.
     
    Raytheeagle and JC91006 like this.
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