HomeP1066 · Code meaning and manufacturer information
Powertrain

P1066

Code meaning and manufacturer information

P1066

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

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Manufacturer communications

23

Original wording in English

MAS003869

MASERATI

Reported code forms P1066

Rapid Update 680 to address MIL (Malfunction Indicator Lamp) turning ON while driving, attributed to P-codes P106A and P1066 related to the Multiair solenoid valve.

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21-035-20

CHRYSLER

Reported code forms P1066-00

Flash: Transmission Control Module (TCM) Update This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon…

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21-032-20

ALFA ROMEO

Reported code forms P1066-00

Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the (TCM), with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon…

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S2018000003

JEEP

Reported code forms P1066

Customer complaint may include MIL/Check Engine lamp on. Upon further inspection, fault code P219A - Bank 1 Air-Fuel Ratio Imbalance may be found in the powertrain control module (PCM) as pending, active, or stored.…

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21-044-19

ALFA ROMEO

Reported code forms P1066-00

Flash: Transmission Control Module (TCM) Update This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon…

Read communication ↗

21-045-19

ALFA ROMEO

Reported code forms P1066-00

Flash: Transmission Control Module (TCM) Update This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon…

Read communication ↗

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Check vehicle applicability

29

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
Alfa RomeoGIULIA2019
Alfa RomeoGIULIA2018
Alfa RomeoSTELVIO2019
CadillacATS2016
CadillacCTS2016
Chrysler2002016
Chrysler2002015
ChryslerCHRYSLERYear not specified
ChryslerCHRYSLER TRUCKYear not specified
DodgeDART2016
DodgeDART2015
DodgeDART2014
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Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.