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Home >> Lexus >> 2025 >> NX 250 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Stop And Start System - Diagnostic Codes (1 Of 2) >> Stop And Start System >> DTC P2530-14: Ignition Switch Circuit Short to Ground or Open [11/2021 - 03/2023] >> Description
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DTC P2530-14: Ignition Switch Circuit Short to Ground or Open [11/2021 - 03/2023]: Description

If the engine stop and start ECU receives the OFF signal from the certification ECU (smart key ECU assembly) when communication with the ECM is normal, the engine stop and start ECU will output DTC P2530-14.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
P2530-14 Ignition Switch Circuit Short to Ground or Open All of the following conditions are met for 10 seconds or more (1 trip detection logic):
  • Ignition switch off signal is input.
  • Communication with the ECM is normal.
  • Ignition switch (communication) to ON.
  • Wire harness or connector
  • EFI MAIN NO. 1 relay
  • IGP NO. 1 relay
  • Certification ECU (Smart key ECU assembly)
  • Engine stop and start ECU
Does not come on SAE Code: P2531