AutoCodesSaturn – P0778 Saturn

P0778 Saturn Code - Pressure Control Solenoid 'B' Electrical

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 line pressure solenoid 'B' valve. 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
P0778 Saturn indicates Pressure Control Solenoid 'B' Electrical.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid 'B' valve.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 9,340
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 30, 2019
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Code P0778 Saturn 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 P0778 Saturn - Pressure Control Solenoid 'B' Electrical - AutoCodes.com
P0778 Saturn Code - Pressure Control Solenoid 'B' Electrical

What are the Possible Causes of the DTC P0778 Saturn?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty line pressure solenoid 'B' valve
  • Line pressure solenoid 'B' valve harness is open or shorted
  • Line pressure solenoid 'B' valve circuit poor electrical connection

How to Fix the DTC P0778 Saturn?

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 P0778 Saturn 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 P0778 Saturn code?

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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 P0778 Saturn Code

1. What are the common symptoms of OBDII code P0778 in a Saturn related to the Pressure Control Solenoid 'B' Electrical issue?

Common symptoms include harsh or delayed shifting, poor acceleration, transmission slippage, and the illumination of the Check Engine Light.

2. What are some possible causes of OBDII code P0778 in a Saturn vehicle?

Potential causes include a faulty pressure control solenoid 'B', damaged wiring or connectors in the solenoid circuit, low transmission fluid level, or internal transmission issues.

3. How can I diagnose the Pressure Control Solenoid 'B' Electrical issue causing OBDII code P0778 in my Saturn?

Diagnosis typically involves using a scan tool to retrieve the trouble code, checking the transmission fluid level and condition, inspecting the wiring and connectors related to the pressure control solenoid 'B', and conducting a thorough transmission system check.

4. Can I continue driving my Saturn with OBDII code P0778 present?

It is not recommended to drive with this code present, as it can lead to further damage to the transmission and potentially result in costly repairs. It's best to address the issue promptly.

5. Is it possible to repair the Pressure Control Solenoid 'B' Electrical problem in my Saturn myself?

While some DIY enthusiasts may attempt to replace the pressure control solenoid 'B' themselves, it is recommended to have a qualified mechanic perform the repair to ensure proper installation and avoid further complications.

6. Will resetting the OBDII code P0778 in my Saturn make the issue go away?

Resetting the code may temporarily turn off the Check Engine Light, but it will not fix the underlying problem causing the code. The issue should be diagnosed and repaired to prevent further issues.

7. How much does it typically cost to repair the Pressure Control Solenoid 'B' Electrical problem in a Saturn?

The cost of repair can vary depending on the extent of the issue and whether other components need replacement. On average, expect to pay between $200 and $500 for parts and labor.

8. Are there any preventive maintenance tips to help avoid OBDII code P0778 in a Saturn?

Regularly checking and servicing the transmission fluid, addressing any leaks promptly, and following the manufacturer's recommended maintenance schedule can help prevent issues related to the pressure control solenoid 'B' electrical system.

9. Can a faulty pressure control solenoid 'B' cause other transmission problems in a Saturn?

Yes, a malfunctioning pressure control solenoid 'B' can lead to erratic shifting, transmission slipping, and reduced performance, potentially causing further damage to the transmission if not addressed promptly.

10. How long does it typically take to repair the Pressure Control Solenoid 'B' Electrical issue in a Saturn?

The repair process can vary depending on the mechanic's experience and workload, but it generally takes a few hours to replace the pressure control solenoid 'B' and address any related wiring or connector issues.

Discuss the causes and fixes for P0778 Saturn OBDII Code

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