AutoCodes – Audi – P0796 Audi

P0796 Audi Code - Pressure Control Solenoid 'C' Performance

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: P0796 Audi indicates Pressure Control Solenoid 'C' Performance.
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.

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Code Popularity 4,884

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 30, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0796 Audi Description

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).

OBDII Code P0796 Audi - Pressure Control Solenoid 'C' Performance - AutoCodes.com — P0796 Audi Code - Pressure Control Solenoid 'C' Performance

What does this mean?

What are the Possible Causes of the DTC P0796 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 P0796 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.

What does this mean?

Code Tech Notes

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0796 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.

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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 P0796 Audi Code

1. What does the OBDII code P0796 mean on an Audi?

P0796 indicates an issue with the Pressure Control Solenoid 'C' in the transmission, where its performance is outside the expected range.

2. What are common symptoms of the P0796 code in an Audi?

Symptoms may include harsh or delayed shifting, transmission slipping, poor fuel economy, or the vehicle going into limp mode.

3. What causes the P0796 code to appear in an Audi?

Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, a damaged valve body, or electrical issues such as corroded or damaged wiring.

4. How serious is the P0796 code for my Audi?

The P0796 code is serious as it can lead to transmission damage and unsafe driving conditions. It should be diagnosed and repaired promptly.

5. How can I fix the P0796 code on my Audi?

Repairs may involve replacing the pressure control solenoid, flushing and refilling the transmission fluid, repairing wiring or connectors, or addressing internal transmission issues.

6. Can low transmission fluid cause the P0796 code?

Yes, low or contaminated transmission fluid can cause the pressure control solenoid to malfunction, triggering the P0796 code.

7. How do I diagnose the P0796 code in my Audi?

Diagnosis involves checking the transmission fluid level and condition, inspecting wiring and connectors, testing the solenoid, and potentially conducting a transmission pressure test.

8. What happens if I ignore the P0796 code on my Audi?

Ignoring the P0796 code can lead to worsening transmission issues, increased repair costs, and potential transmission failure.

9. Can I drive my Audi with the P0796 code?

Driving with the P0796 code is not recommended, as it may result in unsafe driving conditions and further damage to the transmission.

10. Is replacing the pressure control solenoid the only fix for the P0796 code?

Not always. While a faulty solenoid is a common cause, the issue might also stem from fluid problems, electrical faults, or internal transmission damage.