P0847 Mercedes-Benz Code - Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low
Quick Answer
The Transmission Control Module (TCM) monitors the Transmission Fluid Pressure Sensor/Switch signal. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'B', Transmission Fluid Pressure Sensor/Switch 'B' harness is open or shorted, Transmission Fluid Pressure Sensor/Switch 'B' 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 Mercedes-Benz indicates Transmission Fluid Pressure Sensor/Switch 'B' Circuit Low.
- Common causes
- Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'B', Transmission Fluid Pressure Sensor/Switch 'B' harness is open or shorted, Transmission Fluid Pressure Sensor/Switch 'B' 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.
Code P0847 Mercedes-Benz Description
What are the Possible Causes of the DTC P0847 Mercedes-Benz?
- Faulty Transmission Fluid Pressure Sensor/Switch 'B'
- Transmission Fluid Pressure Sensor/Switch 'B' harness is open or shorted
- Transmission Fluid Pressure Sensor/Switch 'B' circuit poor electrical connection
How to Fix the DTC P0847 Mercedes-Benz?
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 Mercedes-Benz 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.
Need more information about the P0847 Mercedes-Benz code?
Need more information on how to fix the P0847 Mercedes-Benz code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0847 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0847 Mercedes-Benz Code
What does the OBDII code P0847 mean for a Mercedes-Benz?
P0847 indicates a problem with the Transmission Fluid Pressure Sensor/Switch 'B' circuit, specifically that the circuit is reporting low pressure readings.
What are the common symptoms of code P0847 on a Mercedes-Benz?
Symptoms may include erratic or delayed shifting, transmission slipping, reduced fuel efficiency, and the vehicle entering limp mode.
What causes code P0847 in a Mercedes-Benz?
Common causes include a faulty transmission fluid pressure sensor, low or degraded transmission fluid, damaged wiring or connectors, or internal transmission issues.
Can driving with code P0847 damage my Mercedes-Benz?
Yes, driving with this code may lead to further damage to the transmission and reduced performance, so it’s best to address the issue promptly.
How do you diagnose code P0847 on a Mercedes-Benz?
Diagnosis involves checking transmission fluid levels, inspecting wiring and connectors for damage, and testing the transmission fluid pressure sensor for proper functionality.
What repairs are needed to fix code P0847 in a Mercedes-Benz?
Repairs may include replacing the transmission fluid pressure sensor, repairing damaged wiring or connectors, replenishing or flushing the transmission fluid, or addressing internal transmission problems.
What tools are needed to troubleshoot code P0847 on a Mercedes-Benz?
A diagnostic OBDII scanner, a multimeter for testing electrical connections, and basic tools for inspecting and repairing components are typically required.
How much does it cost to fix code P0847 on a Mercedes-Benz?
Repair costs vary depending on the issue but can range from $100 for sensor replacement to several hundred dollars for internal transmission repairs.
Can low transmission fluid cause code P0847 on a Mercedes-Benz?
Yes, low or contaminated transmission fluid can cause inaccurate pressure readings and trigger this code.
How can I prevent code P0847 from occurring on a Mercedes-Benz?
Regular transmission fluid checks, timely fluid changes, and inspections of wiring and sensors can help prevent this issue.
Discuss the causes and fixes for P0847 Mercedes-Benz OBDII Code
Code P0847 Mercedes-Benz comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
