OBD Guide
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P174F

Valve 4 In The Sub-Gearbox 2 Electric Fault

P174F is an OBD-II diagnostic trouble code meaning: Valve 4 In The Sub-Gearbox 2 Electric Fault. Common causes: open or short circuit in valve circuit, solenoid valve malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Incorrect gear shifting
  • Power Loss
  • Check Engine Light Illuminates
  • Transmission transition to emergency mode
  • Jerks when shifting gears

Causes

  • Open or short circuit in valve circuit
  • Solenoid valve malfunction
  • Wiring Harness Problems
  • Transmission control module malfunction
  • Poor electrical contact

How to Fix

  1. Check the valve circuit for open circuit and short circuit.
  2. Test valve resistance
  3. Inspect the wiring harness for damage
  4. Check connector contacts
  5. Replace faulty valve if necessary

Related codes

P174EP1750P1751

FAQ

What does the P174F code mean?

P174F is an OBD-II diagnostic trouble code that indicates: Valve 4 In The Sub-Gearbox 2 Electric Fault

What causes a P174F error code?

The most common causes of P174F include: Open or short circuit in valve circuit; Solenoid valve malfunction; Wiring Harness Problems; Transmission control module malfunction.

How do I fix a P174F diagnostic trouble code?

To fix P174F: Check the valve circuit for open circuit and short circuit.. Test valve resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P174F?

Yes, but get it checked soon

How much does it cost to fix P174F?

The estimated repair cost for P174F is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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