P1618

Set by the manufacturer, so it means different things on different makes. 13 makes in the table below.

More codes than this one? Paste your whole scan

What P1618 means, by make 13 makes

Acura Serial Peripheral Interface PCM Interprocessor Communication Error, A/T Only
Audi Glow Plug/Heater Relay Circ. Short to B +
Chevrolet Serial Peripheral Interface (SPI) PCM Internal Communication Error
Chrysler 5V Output Reference Voltage 1 Noisy Signal, or Sensor Reference Voltage 1 Erratic
Citroen SBDS Interactive Codes
Dodge 5V Output Reference Voltage 1 Noisy Signal, or Sensor Reference Voltage 1 Erratic
Ford SBDS Interactive Codes
Isuzu SPI Communications Error
Jeep 5V Output Reference Voltage 1 Noisy Signal, or Sensor Reference Voltage 1 Erratic
Opel Engine control module (ECM) - malfunction
Peugeot SBDS Interactive Codes
Volkswagen Glow Plug/Heater Relay Circ. Short to B +
Volvo Glow Plug/Heater Relay Circ. Short to B +

Each line is that manufacturer's own meaning for P1618. 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 P1618

Powertrain

engine, transmission and emissions

Manufacturer-specific

Defined by the vehicle manufacturer, so the meaning varies between makes.

Fault index

identifies the specific fault

Powertrain Manufacturer-specific

Nearby codes in the P1 range

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.