Engine-Codes - Generic - P0994

P0994 Code - LR Pressure Switch Sense Circuit

- Code Popularity: 5,627 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0994?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • LR Pressure Switch harness is open or shorted
  • LR Pressure Switch circuit poor electrical connection
  • Faulty LR Pressure Switch
  • Internal transmission damage
  • Faulty Powertrain Control Module (PCM)
  • Faulty Transmission Control Module (TCM)
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How to Fix the DTC P0994?

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 P0994 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.

When is the Code Detected?

This code is set if the LR pressure switch is either open or closed at the wrong time in a given gear.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Transmission will not shift gears.

What Does the P0994 Code Mean?

The Powertrain Control Module (PCM) uses three pressure switches to monitor the fluid pressure in the LR, 2/4, and OD clutch circuits. The pressure switches are continuously monitored for the correct states in each gear as shown below.

P0994 Code - LR Pressure Switch Sense Circuit

Need more Information on the Code?

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Code P0994 Information for Specific Makes

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