P1605 – Nissan DTC

Nissan DTC P1605 – A/T Diagnostic Communication Line

DTC P1605 meaning on Nissan

DTC P1605 for Nissan refers to a fault in the Automatic Transmission (A/T) Diagnostic Communication Line. This code indicates a communication issue between the Engine Control Module (ECM) and the Transmission Control Module (TCM).

Nissan DTC P1605 symptoms

Symptoms of DTC P1605 on a Nissan may include:

• Check Engine Light illuminated
• Transmission shifting issues
• Vehicle may go into “limp mode” for safety

Nissan DTC P1605 causes

Common causes of DTC P1605 on a Nissan include:

• Faulty wiring or connectors in the communication line
• Defective TCM or ECM
• Interference from other electronic components

Nissan DTC P1605 seriousness

DTC P1605 should be addressed promptly as it can lead to transmission issues and affect the drivability of the vehicle. Ignoring this code may result in further damage to the transmission system.

How to diagnose DTC P1605 on Nissan

To diagnose DTC P1605 on a Nissan, follow these steps:

1. Use a diagnostic scanner to retrieve the trouble codes
2. Inspect the wiring and connectors for any visible damage
3. Check for proper voltage and continuity in the communication line
4. Perform a TCM and ECM self-diagnosis to pinpoint the issue

How to fix DTC P1605 on Nissan

To fix DTC P1605 on a Nissan, you can:

1. Repair or replace any damaged wiring or connectors
2. Replace the faulty TCM or ECM if necessary
3. Ensure proper grounding and shielding of the communication line

How to erase DTC P1605 on Nissan

To erase DTC P1605 on a Nissan:

1. Use a diagnostic scanner to clear the trouble codes
2. Verify that the issue has been resolved by driving the vehicle and rescanning for codes