Engine control module (ECM)
Ford · engine
Data confidence62%
The control module detected a fault associated with the Engine control module (ECM) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.
Engine coolant thermostat, circuit high - circuit malfunction
Land Rover · thermal_management
Data confidence62%
The control module detected that the signal in the Engine coolant thermostat circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Land Rover.
Data bus, cruise control module - communication error
Lexus · driver_assistance
Data confidence62%
The control module detected a communication fault involving Data bus, cruise control module on the vehicle network. This is the manufacturer-specific definition used by Lexus.
Immobilizer control module / instrumentation control module communication - incorrect code
Opel · immobilizer
Data confidence62%
The control module detected that the Immobilizer control module / instrumentation control module communication state or value did not match what was expected. This is the manufacturer-specific definition used by Opel.
Keyless start control module - not coded
Suzuki · engine
Data confidence62%
The control module detected a fault associated with the Keyless start control module - not coded circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Suzuki.
CAN data bus, cruise control module - communication error
Toyota · driver_assistance
Data confidence62%
The control module detected a communication fault involving CAN data bus, cruise control module on the vehicle network. This is the manufacturer-specific definition used by Toyota.
Glow plug warning lamp - short to positive
VAG · ignition
Data confidence62%
The control module detected a short circuit to battery voltage in the Glow plug warning lamp circuit. This is the manufacturer-specific definition used by Audi.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
616
Specific fault index within the subsystem.
Frequently asked questions about P1616
What does P1616 mean?
Diagnostic Trouble Code (7 interpretations). The control module detected a fault associated with the Engine control module (ECM) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.
Is P1616 generic or manufacturer-specific?
P1616 is a manufacturer-specific code. In this database it is documented for: Ford, Land Rover, Lexus, Opel, Suzuki, Toyota, VAG. The same number can mean something different on other brands.
Can TuningBot remove P1616 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.