Engine-Codes - Nissan - P1777 NISSAN

P1777 NISSAN Code - Step Motor Circuit

- Code Popularity: 133,743 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P1777 NISSAN Code?

  • Faulty Step Motor
  • Step Motor harness is open or shorted
  • Step Motor poor electrical connection

|How to Fix the P1777 NISSAN Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P1777 NISSAN code tech notes

There is a factory service bulletin for the following Nissan Models:

2007-2008 Nissan Altima
2007-2008 Nissan Rogue
2007-2008 Nissan Sentra
The bulletin suggests replacing the transmission valve body.
2007-2008 Nissan Altima, Rogue, Sentra Factory Service Bulletin OBDII Code P1777

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|What is the cost to diagnose the P1777 NISSAN code?

Labor: 1.0

The cost to diagnose the P1777 NISSAN code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P1777 NISSAN code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P1777 NISSAN Code Mean?

The Step Motor changes the step by turning 4 coils ON/OFF according to the signal from Transmission Control Module (TCM). As a result, the flow of line pressure to the primary pulley is changed and the pulley ratio is controlled. The Diagnostic Trouble Code (DTC) will set when the Step Motor does not respond to the TCM command.

Step Motor Circuit

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