P1065 on Fiat
Cylinder 1 Oil Supply Solenoid Valve / ECM Power or Fuel Pressure Fault (manufacturer-specific)
P1065 on Fiat vehicles indicates cylinder 1 oil supply solenoid valve / ecm power or fuel pressure fault (manufacturer-specific). Au7o has documented this code across 1 Fiat model — most commonly on 500. P1065 is a manufacturer-specific powertrain code with more than one meaning. On some Chrysler/Fiat-family engines it refers to the cylinder 1 oil-supply solenoid valve switching time being out of range (part of variable valve/oil control). On other makes (such as Nissan and some GM applications) it has been used for ECM power supply or fuel-pressure-related faults. Because the definition varies, the exact circuit involved should be confirmed against the specific make and model. Typical repair costs on Fiat range from $800 to $1,400, depending on the specific model and root cause.
Common Causes of P1065
- •Faulty oil control / oil supply solenoid valve (cylinder 1)
- •Wiring or connector problems in the solenoid circuit
- •Low or contaminated engine oil affecting solenoid operation
- •ECM/PCM power-supply or ground fault (some makes)
- •Fuel pressure sensor or fuel delivery fault (some makes)
- •Faulty PCM/ECM
- •Related variable valve timing circuit issue
P1065 on Fiat by Model
Fiat 500(1 issue)
- MultiAir Actuator Failure2012-2019
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.
Looking for P1065 on a different make?
View P1065 across all makes →Frequently Asked Questions
What does P1065 mean on Fiat?▼
P1065 stands for "Cylinder 1 Oil Supply Solenoid Valve / ECM Power or Fuel Pressure Fault (manufacturer-specific)." P1065 is a manufacturer-specific powertrain code with more than one meaning. On some Chrysler/Fiat-family engines it refers to the cylinder 1 oil-supply solenoid valve switching time being out of range (part of variable valve/oil control). On other makes (such as Nissan and some GM applications) it has been used for ECM power supply or fuel-pressure-related faults. Because the definition varies, the exact circuit involved should be confirmed against the specific make and model. On Fiat specifically, this code is documented across 1 model.
What causes P1065 on Fiat vehicles?▼
Common causes on Fiat: Faulty oil control / oil supply solenoid valve (cylinder 1), Wiring or connector problems in the solenoid circuit, Low or contaminated engine oil affecting solenoid operation, ECM/PCM power-supply or ground fault (some makes), Fuel pressure sensor or fuel delivery fault (some makes). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1065 on a Fiat?▼
Repair costs on Fiat range from $800 to $1,400, depending on the specific model and root cause.
Which Fiat models have P1065 documented?▼
Au7o has documented P1065 on 1 Fiat model: 500.