Engine-Codes - Generic - P1731

P1731 Code - A/T 1st Engine Braking

- Code Popularity: 41,927 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1731?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low transmission fluid
  • Faulty Low Coast Brake Solenoid Valve
  • Low Coast Brake Solenoid Valve harness is open or shorted
  • Low Coast Brake Solenoid Valve circuit poor electrical connection
  • Faulty Automatic Transmission Fluid (ATF) Pressure Switch
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How to Fix the DTC P1731?

Check 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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1731 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1731 Code Mean?

The engine braking is controlled by the Low Coast Brake Solenoid Valve. The Transmission Control Module (TCM) uses the Automatic Transmission Fluid (ATF) Pressure Switch to monitor the Low Coast Brake apply pressure. The Diagnostic Trouble Code (DTC) will set when the TCM monitors each ATF Pressure Switch and Low Coast Brake Solenoid monitor value and detects as irregular when engine brake of 1st gear acts other than at M1 position.

P1731 Code - A/T 1st Engine Braking

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Code P1731 Information for Specific Makes

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