Engine-Codes - Generic - P077A

P077A Code - Output Speed Sensor Circuit - Loss of Direction Signal

- Code Popularity: 1,664 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P077A?

  • Faulty Speed Sensor
  • Speed Sensor harness is open or shorted
  • Speed Sensor circuit poor electrical connection

|How to Fix the P077A 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.

|What is the Cost to Diagnose the Code P077A?

Labor: 1.0

The cost to diagnose the P077A 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.

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|What are Code P077A Possible Symptoms?

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

|What Does the P077A Code Mean?

The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the Transmission Control Module (TCM) which converts it into vehicle speed.

P077A Code - Output Speed Sensor Circuit - Loss of Direction Signal

|Need more Information on the P077A Code?

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|Need Help with the P077A Code?

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