OBD Guide
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P1911

VFS B Pressure Output Failed Low

P1911 is an OBD-II diagnostic trouble code meaning: VFS B Pressure Output Failed Low. Common causes: vfs b solenoid malfunction, open or short circuit in control circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Rough engine operation
  • Gear shifting problems
  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption

Causes

  • VFS B solenoid malfunction
  • Open or short circuit in control circuit
  • Wiring Harness Problems
  • Dirty or clogged pressure control system
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check VFS B solenoid control circuit
  2. Test solenoid resistance
  3. Inspect the wiring harness for damage
  4. Clean or replace VFS B solenoid
  5. If necessary, replace the engine control unit

Related codes

P1910P1912P1913

FAQ

What does the P1911 code mean?

P1911 is an OBD-II diagnostic trouble code that indicates: VFS B Pressure Output Failed Low

What causes a P1911 error code?

The most common causes of P1911 include: VFS B solenoid malfunction; Open or short circuit in control circuit; Wiring Harness Problems; Dirty or clogged pressure control system.

How do I fix a P1911 diagnostic trouble code?

To fix P1911: Check VFS B solenoid control circuit. Test solenoid resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1911?

Yes, but get it checked soon

How much does it cost to fix P1911?

The estimated repair cost for P1911 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat