P0783 — Pressure Control Solenoid B Intermittent
Drivable short-term, but fix now to avoid damage.
What P0783 means
This code means the transmission control module detected an intermittent fault with pressure control solenoid B, which regulates fluid pressure for smooth shifting. Because it's intermittent, it's often caused by loose or corroded wiring, a sticking solenoid, or low or contaminated fluid. Typical fixes include repairing connectors and wiring, replacing the solenoid, or servicing the transmission fluid.
Common symptoms
- Check engine light is on
- Occasional harsh or slipping shifts
- Inconsistent transmission behavior
- Transmission intermittently enters limp mode
- Delayed gear engagement at times
Common causes
- Intermittent fault in pressure control solenoid B
- Loose, corroded, or chafed wiring or connectors
- Low or contaminated transmission fluid
- Sticking valve body or debris
- Failing transmission control module
Typical repair cost
$150 – $650
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0783 code?
For short trips usually yes, but it's unpredictable. The intermittent fault means the transmission could slip or enter limp mode without warning, so get it checked soon.
How much does it cost to fix a P0783 code?
Expect about $150 to $650. A wiring repair or fluid service is cheaper, while replacing the solenoid or addressing the valve body costs more.
Is a P0783 code serious?
It can be. Even though it's intermittent, it points to a real transmission fault that can worsen, so it's best to diagnose and repair it promptly.
Why is an intermittent code harder to fix?
Because the fault doesn't happen all the time, a technician may need to test under specific conditions to catch it, often inspecting wiring and connectors carefully.