Nissan Altima P1726 Electric Throttle Control System

Overview of P1726 – NISSAN Code

When dealing with the P1726 – NISSAN code related to the Electric Throttle Control System, it is crucial to understand the possible causes and diagnostic procedures associated with this issue. This code is commonly found in Nissan vehicles and is linked to the Electric Throttle Control Actuator, which includes components such as the throttle control motor, accelerator pedal position sensor, and throttle position sensor.

Diagnostic Logic

The diagnostic process involves a series of checks to confirm the presence of the P1726 ELEC TH CONTROL code. This includes checking with both the Engine Control Module (ECM) and the Transmission Control Module (TCM). If the code is detected, a detailed diagnosis procedure is initiated.

DTC Confirmation Procedure

  1. Check DTC with ECM:
    • Turn ignition switch ON.
    • Select “SELF-DIAG RESULTS” mode for “ENGINE”.
    • If the result is normal, proceed to the next step. Otherwise, refer to DTC Index.
  2. Check DTC with TCM:
    • Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
    • If the P1726 ELEC TH CONTROL is detected, replace TCM. Otherwise, proceed to the next step.
  3. Detect Malfunctioning Items:
    • Inspect TCM connector pin terminals for damage or loose connection.
    • If normal, replace TCM. Otherwise, repair or replace damaged parts.

Possible Causes

The P1726 code may arise from various issues within the Electric Throttle Control System. These include:

  • Faulty Throttle Body
  • Throttle Body harness being open or shorted
  • Poor electrical connection in the Throttle Body circuit

Insights into the DTC P1726 Nissan

Understanding the DTC P1726 Nissan requires a comprehensive exploration of its potential causes and recommended solutions. This code is associated with the Electric Throttle Control System, and it’s essential to address the underlying issues to ensure optimal vehicle performance.

Code P1726 Nissan Tech Notes

If the P1726 is displayed alongside other codes related to the Engine Control Module (ECM), it is advisable to prioritize the trouble diagnosis for the additional codes. This sequential approach helps in identifying and resolving multiple issues efficiently.

How to Fix the DTC P1726 Nissan?

To address the DTC P1726 Nissan, it is recommended to follow these steps:

  1. Check the ‘Possible Causes’ listed above.
  2. Visually inspect the related wiring harness and connectors.
  3. Check for damaged components.
  4. Look for broken, bent, pushed out, or corroded connector pins.

Cost and Symptoms

The cost to diagnose the P1726 Nissan code is typically 1.0 hour of labor. However, actual costs may vary depending on factors such as location, vehicle make and model, and engine type. Common symptoms associated with the P1726 code include the Engine Light being ON or the Service Engine Soon Warning Light illuminating.

Additional Information on P1726 Nissan

For more detailed information on the P1726 Nissan code, users can explore resources such as This platform provides insights into OBD-II codes and offers access to Factory Service Manuals, catering to specific Nissan models like the 2005 and 2006 Nissan Altima Sedan.

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