P106B on 2012-2019 Fiat 500 (Pop, Sport, Lounge, Turbo) — Manufacturer-Specific Powertrain Sensor/Solenoid Fault
1 vehicles · 1 makes · $800-$1,400 repair
How to diagnose and fix P106B: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Fiat 500 · 2012–2019
The MultiAir electro-hydraulic valve actuation system can fail, causing rough idle, misfires, and check engine light with codes P0014 or P1014. This is a common failure on the 1.4L MultiAir engine, often occurring between 40,000 and 80,000 miles.
Common Symptoms
- Rough idle
- Engine misfire
- Check engine light
- Reduced power
- Ticking noise from engine
How to Fix
Replace the MultiAir actuator unit on top of the cylinder head. Use updated Mopar part number for revised design.
Sources for this issue (1)
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P106B code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P106B mean?
P106B stands for "Manufacturer-Specific Powertrain Sensor/Solenoid Fault." P106B is a manufacturer-specific powertrain code whose meaning varies significantly by maker, so it should not be read as a single fixed fault. Reported definitions include a cylinder 4 oil-supply solenoid valve timing fault (Chrysler/Fiat group), a fuel pressure regulator performance issue (some Honda/Toyota references), a throttle valve stuck/hard-to-move condition (some VW references), and pressure-sensor correlation faults on others. Because of this, the specific circuit must be confirmed with make-and-model service data before repair.
What are the most common causes of P106B?
The most common causes of P106B are: Oil supply/control solenoid valve fault (Chrysler/Fiat group), Fuel pressure regulator or fuel system performance issue (some makes), Throttle body/valve sticking or contamination (some VW), Pressure sensor or sensor-correlation fault, Wiring, connector, or ground problems in the affected circuit, Low or dirty engine oil (oil-solenoid variants), Faulty PCM/ECM. The specific cause varies by vehicle.
How much does it cost to fix P106B?
Repair costs for P106B range from $800 to $1,400, depending on the vehicle and root cause.
Which vehicles are affected by P106B?
Au7o has documented P106B across 1 vehicle models from 1 manufacturers: Fiat.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.