OBD Guide
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P105B

Internal Control Module VVT Error Voltage Too Low

P105B is an OBD-II diagnostic trouble code meaning: Internal Control Module VVT Error Voltage Too Low. Common causes: vvt control module malfunction, damage to the vvt system wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Problems starting the engine

Causes

  • VVT control module malfunction
  • Damage to the VVT system wiring harness
  • Poor contact in VVT system connectors
  • VVT Module Power Problems
  • Short circuit in control circuit

How to Fix

  1. Check the integrity of the VVT system wiring harness
  2. Check connections and contacts in connectors
  3. Measure the supply voltage of the VVT module
  4. Check control circuit resistance
  5. Replace VVT control module if necessary

Related codes

P105AP105CP105D

FAQ

What does the P105B code mean?

P105B is an OBD-II diagnostic trouble code that indicates: Internal Control Module VVT Error Voltage Too Low

What causes a P105B error code?

The most common causes of P105B include: VVT control module malfunction; Damage to the VVT system wiring harness; Poor contact in VVT system connectors; VVT Module Power Problems.

How do I fix a P105B diagnostic trouble code?

To fix P105B: Check the integrity of the VVT system wiring harness. Check connections and contacts in connectors. Measure the supply voltage of the VVT module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P105B?

Yes, but get it checked soon

How much does it cost to fix P105B?

The estimated repair cost for P105B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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