Throttle valve - rest position incorrect
Chevrolet · engine
Data confidence62%
The control module detected that the Throttle valve - rest position state or value did not match what was expected. This is the manufacturer-specific definition used by Chevrolet.
Idle air control (IAC) valve closing coil - circuit malfunction
Land Rover · engine
Data confidence62%
The control module detected improper operation of the Idle air control (IAC) valve closing coil circuit. This is the manufacturer-specific definition used by Land Rover.
Battery Current Sensor Circuit Low Input
Lexus · engine
Data confidence62%
The control module detected that the signal in the Battery Current circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Lexus.
AIC compressor clutch cut - off
Mercedes-Benz · transmission
Data confidence62%
The control module detected a fault associated with the AIC compressor clutch cut - off circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mercedes-Benz.
Camshaft Position Actuator 'A' Control Open Circuit Bank 1
MINI · engine
Data confidence62%
The control module detected an interruption (open circuit) in the Camshaft Position Actuator 'A' Control circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by MINI.
The control module detected that the signal in the Electrical load circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Nissan.
Electronic throttle system (ETS), engine torque monitoring continuously above limit
Opel · engine
Data confidence62%
The control module detected a fault associated with the Electronic throttle system (ETS), engine torque monitoring continuously above limit circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Opel.
Idle Air Control Valve
Porsche · engine
Data confidence62%
The control module detected a fault associated with the Idle Air Control Valve circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Porsche.
Throttle valve - rest position - not reached
Suzuki · engine
Data confidence62%
The control module detected a fault associated with the Throttle valve - rest position - not reached 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.
Battery Current Sensor Circuit Low Input
Toyota · engine
Data confidence62%
The control module detected that the signal in the Battery Current circuit stayed below the expected operating range. This is the manufacturer-specific definition used by Toyota.
Barometric Pressure Sensor Circuit Short to B+
VAG · engine
Data confidence62%
The control module detected a short circuit to battery voltage in the Barometric Pressure Sensor circuit. This is the manufacturer-specific definition used by Audi.
Possible causes
Wiring
BARO sensor
Applies toAudi
P1551
Barometric Pressure Sensor Circuit Short to B+
VAG · engine
Data confidence80%
The control module detected a short circuit to battery voltage in the Barometric Pressure Sensor circuit. This is the manufacturer-specific definition used by Volkswagen.
Vehicle speed, serial communication - implausible signal
Volvo · engine
Data confidence62%
The control module judged the Vehicle speed, serial communication signal implausible when compared with other operating data. This is the manufacturer-specific definition used by Volvo.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
551
Specific fault index within the subsystem.
Frequently asked questions about P1551
What does P1551 mean?
Diagnostic Trouble Code (13 interpretations). The control module detected that the Throttle valve - rest position state or value did not match what was expected. This is the manufacturer-specific definition used by Chevrolet.
Is P1551 generic or manufacturer-specific?
P1551 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Land Rover, Lexus, Mercedes-Benz, MINI, Nissan, Opel, Porsche, Suzuki, Toyota, VAG, Volvo. The same number can mean something different on other brands.
Can TuningBot remove P1551 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.