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AutoCodes - Generic - P0994

P0994 Code - LR Pressure Switch Sense Circuit

- Code Popularity: 5,625 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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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?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0994 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to 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.

Code P0994 Description

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.

OBDII Code P0994 - LR Pressure Switch Sense Circuit - AutoCodes.com
P0994 Code - LR Pressure Switch Sense Circuit

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Code P0994 comments

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