P0799 Audi Code - Pressure Control Solenoid 'C' Intermittent
Quick Answer
The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty pressure control solenoid valve 'C'. 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
- P0799 Audi indicates Pressure Control Solenoid 'C' Intermittent.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty pressure control solenoid valve 'C'.
- 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 P0799 Audi Description
What are the Possible Causes of the DTC P0799 Audi?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty pressure control solenoid valve 'C'
- Pressure control solenoid valve 'C' harness is open or shorted
- Pressure control solenoid valve 'C' circuit poor electrical connection
How to Fix the DTC P0799 Audi?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0799 Audi 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 P0799 Audi code?
Need more information on how to fix the P0799 Audi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0799 Audi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0799 Audi Code
1. What does the OBDII code P0799 mean on an Audi?
P0799 indicates an intermittent issue with the Pressure Control Solenoid 'C' in the transmission system, which regulates hydraulic pressure for smooth gear shifting.
2. What are the common symptoms of the P0799 code in an Audi?
Symptoms may include erratic or delayed shifting, transmission slipping, reduced fuel efficiency, and the illumination of the check engine light.
3. What causes the P0799 code to appear in an Audi?
Common causes include a faulty pressure control solenoid, poor electrical connections, damaged wiring, low or dirty transmission fluid, or internal transmission issues.
4. Can I continue driving my Audi with the P0799 code?
Driving with this code is not recommended as it may lead to further transmission damage or unsafe driving conditions due to erratic shifting.
5. How do I diagnose the P0799 code on my Audi?
Start by checking the transmission fluid level and condition, inspecting solenoid wiring and connectors, and using a diagnostic scanner to monitor solenoid activity.
6. How do I fix the P0799 code in an Audi?
Repairs may involve replacing the pressure control solenoid, cleaning or repairing electrical connections, flushing and refilling the transmission fluid, or addressing internal transmission damage.
7. How much does it cost to repair the P0799 code in an Audi?
Repair costs vary but can range from $150 to $400 for solenoid replacement, with higher costs if transmission rebuilding or replacement is necessary.
8. Can low transmission fluid cause the P0799 code in an Audi?
Yes, low or degraded transmission fluid can cause pressure control solenoids to malfunction, leading to the P0799 code.
9. What tools are needed to troubleshoot the P0799 code in an Audi?
You’ll need an OBDII scanner, a multimeter for electrical testing, and basic tools for accessing the transmission system components.
10. Is the P0799 code specific to Audis or found in other vehicles?
The P0799 code is not Audi-specific and may appear in other vehicles that use OBDII systems and similar transmission setups.
Discuss the causes and fixes for P0799 Audi OBDII Code
Code P0799 Audi 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.
