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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests) >> Electronic Shift Lever System >> DTC P0850-11: Park/Neutral Switch Circuit Short to Ground; DTC P0850-15: Park/Neutral Switch Circuit Short to Auxiliary Battery or Open [10/2022 - ] >> Description

DTC P0850-11: Park/Neutral Switch Circuit Short to Ground; DTC P0850-15: Park/Neutral Switch Circuit Short to Auxiliary Battery or Open [10/2022 - ]: Description

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The P position switch and shift control ECU are built into the transmission floor shift assembly. The shift control ECU judges operation of the P position switch.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P0850-11 Park/Neutral Switch Circuit Short to Ground When the ignition switch is ON and the auxiliary battery voltage is a certain value or more, it is detected that the P position switch is stuck low
(1 trip detection logic)
Transmission floor shift assembly (shift control ECU) Does not come on Multi-information Display Error Message 
  • Displayed
Hybrid Control A SAE: P0851
P0850-15 Park/Neutral Switch Circuit Short to Auxiliary Battery or Open When the ignition switch is ON and the auxiliary battery voltage is a certain value or more, it is detected that the P position switch is stuck high
(1 trip detection logic)
Transmission floor shift assembly (shift control ECU) Does not come on Multi-information Display Error Message 
  • Displayed
Hybrid Control A SAE: P0852