SpareRadar OBD-II Code Lookup

P1866

Set by the manufacturer, so it means different things on different makes. 9 makes in the table below.

More codes than this one? Paste your whole scan
What P1866 means, by make 9 makes
  • Audi Lack of data bus messages 1866 06246
  • Chevrolet Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Control Circuit Low Voltage
  • Citroen Transmission Transfer Case System Concern - Servicing Required
  • Ford Transmission Transfer Case System Concern - Servicing Required
  • Lincoln Transmission Transfer Case System Concern - Servicing Required
  • Mercury Transmission Transfer Case System Concern - Servicing Required
  • Peugeot Transmission Transfer Case System Concern - Servicing Required
  • Volkswagen Lack of data bus messages 1866 06246
  • Volvo Data Bus Powertrain Missing messages

Each line is that manufacturer's own meaning for P1866. They are genuinely different faults, not rewordings of one, so a meaning listed against one make says nothing about the others. If your make is not listed, we do not hold it - your manufacturer's service information is the authority.

Code structure P1866
P
Powertrain
engine, transmission and emissions
1
Manufacturer-specific
Defined by the vehicle manufacturer, so the meaning varies between makes.
8
6
6
Fault index
identifies the specific fault
Powertrain Manufacturer-specific
Nearby codes in the P1 range
P185D manufacturer-specific, 1 make P1860 manufacturer-specific, 9 makes P1862 manufacturer-specific, 7 makes P1865 manufacturer-specific, 7 makes P186D manufacturer-specific, 1 make P186E manufacturer-specific, 1 make P1870 manufacturer-specific, 9 makes P1872 manufacturer-specific, 5 makes

Manufacturer code meanings from kierandrewett/obd (b56a07a), used under the MIT licence. Copyright (c) Kieran Drewett. SpareRadar is not affiliated with the dataset's authors.