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P1605 – Lexus DTC

Lexus DTC P1605 – Knock Control CPU Malfunction

DTC P1605 meaning on Lexus

DTC P1605 on a Lexus indicates a Knock Control CPU Malfunction. This fault code is related to the engine’s knock sensor system, which monitors for abnormal combustion in the cylinders.

Lexus DTC P1605 symptoms

Symptoms of DTC P1605 on a Lexus may include:

  • Check Engine Light illuminated
  • Engine running rough
  • Reduced engine performance
  • Increased fuel consumption

Lexus DTC P1605 causes

Common causes of DTC P1605 on a Lexus include:

  • Faulty knock sensor
  • Wiring issues in the knock sensor circuit
  • Defective Knock Control CPU

Lexus DTC P1605 seriousness

DTC P1605 should be addressed promptly as it can lead to engine performance issues and potential damage if left unresolved. Ignoring this fault code may result in poor fuel economy and engine knocking.

How to diagnose DTC P1605 on Lexus

To diagnose DTC P1605 on a Lexus, a mechanic may perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault code
  2. Inspect the knock sensor and its wiring for any visible damage
  3. Test the Knock Control CPU for proper function

How to fix DTC P1605 on Lexus

To fix DTC P1605 on a Lexus, the following steps may be taken:

  1. Replace the faulty knock sensor
  2. Repair any damaged wiring in the knock sensor circuit
  3. If the Knock Control CPU is defective, replace it

How to erase DTC P1605 on Lexus

DTC P1605 can be erased from a Lexus by using a diagnostic scanner to clear the fault code memory. After the repair has been completed, the code can be reset to turn off the Check Engine Light.

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Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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