DTC Descriptors
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P1820
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Internal Mode Switch A Circuit Low Voltage
- DTC P1822
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Internal Mode Switch B Circuit High Voltage
- DTC P1823
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Internal Mode Switch P Circuit Low Voltage
- DTC P1825
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Internal Mode Switch - Invalid Range
- DTC P1826
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Internal Mode Switch C Circuit High Voltage
- DTC P1915
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Internal Mode Switch Does Not Indicate Park/Neutral (P/N) During Start