AutoCodesAcura – P0847 Acura

P0847 Acura Code - 3rd Clutch Transmission Fluid Pressure Switch Circuit Short or Stuck ON

Quick Answer

The 3rd clutch transmission fluid pressure switch is installed in the hydraulic pressure circuit to the 3rd clutch. Common causes include Faulty 3rd Clutch Transmission Fluid Pressure Switch, 3rd Clutch Transmission Fluid Pressure Switch harness is open or shorted, 3rd Clutch Transmission Fluid Pressure Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0847 Acura indicates 3rd Clutch Transmission Fluid Pressure Switch Circuit Short or Stuck ON.
Common causes
Common causes include Faulty 3rd Clutch Transmission Fluid Pressure Switch, 3rd Clutch Transmission Fluid Pressure Switch harness is open or shorted, 3rd Clutch Transmission Fluid Pressure Switch circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 23,928
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 10, 2019
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Code P0847 Acura Description

The 3rd clutch transmission fluid pressure switch is installed in the hydraulic pressure circuit to the 3rd clutch. When hydraulic pressure is supplied to the 3rd clutch, the switch is turned ON. When hydraulic pressure is not supplied to the 3rd clutch, the switch is turned OFF. The signal from the 3rd clutch transmission fluid pressure switch is input to the Powertrain Control Module (PCM). The PCM detects the hydraulic pressure supply conditions at the gear change to 3rd gear (2nd → 3rd, 4th → 3rd) to reduce the shock that occurs at the gear change. If the 3rd clutch transmission fluid pressure switch is ON while driving, and the speed ratio of the countershaft to the mainshaft is other than the 3rd ratio (the ratio is Neutral or 4th), the PCM detects a 3rd clutch transmission fluid pressure switch failure, and a DTC is stored.
OBDII Code P0847 Acura - 3rd Clutch Transmission Fluid Pressure Switch Circuit Short or Stuck ON - AutoCodes.com
P0847 Acura Code - 3rd Clutch Transmission Fluid Pressure Switch Circuit Short or Stuck ON

What are the Possible Causes of the DTC P0847 Acura?

  • Faulty 3rd Clutch Transmission Fluid Pressure Switch
  • 3rd Clutch Transmission Fluid Pressure Switch harness is open or shorted
  • 3rd Clutch Transmission Fluid Pressure Switch circuit poor electrical connection

How to Fix the DTC P0847 Acura?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0847 Acura code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0847 Acura Code

1. What does the OBDII code P0847 mean for an Acura?

P0847 indicates a problem with the 3rd Clutch Transmission Fluid Pressure Switch Circuit, which may be shorted or stuck in the "ON" position.

2. What are common symptoms of the P0847 code on an Acura?

Symptoms may include erratic shifting, transmission slipping, poor acceleration, or the Check Engine Light being illuminated.

3. What causes the P0847 code on an Acura?

The code can be caused by a faulty transmission fluid pressure switch, damaged wiring, corroded connectors, or low transmission fluid levels.

4. Can driving with the P0847 code damage my Acura?

Yes, driving with this code can cause transmission damage over time due to improper fluid pressure regulation, so prompt repairs are recommended.

5. How do I diagnose the P0847 code on my Acura?

Diagnosis typically involves inspecting the transmission fluid pressure switch, checking wiring and connectors for damage, and verifying the fluid level and quality.

6. How do I fix the P0847 code on an Acura?

Repairs may include replacing the faulty pressure switch, repairing damaged wiring or connectors, or flushing and refilling the transmission fluid.

7. Can low transmission fluid cause the P0847 code?

Yes, low or contaminated transmission fluid can affect pressure readings and trigger the P0847 code.

8. How much does it cost to repair the P0847 code on an Acura?

Repair costs vary but may range from $100 to $400 depending on whether the issue is with the pressure switch, wiring, or fluid.

9. Can I clear the P0847 code without fixing the issue?

Clearing the code without addressing the root cause will likely result in the code returning and potential transmission issues.

10. Is the P0847 code specific to Acura vehicles?

No, the code can appear on other vehicles with similar transmission systems, but the specific diagnosis and repair steps may vary by make and model.

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