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TuningBot DTC Database · v4.37.14

P1550 Diagnostic Trouble Code (12 interpretations)

12 manufacturer-specific interpretations across 11 manufacturers in the TuningBot DTC database.

P · PowertrainDriver_assistanceOBD2

Chevrolet

1 interpretation
P1550
Cruise control system, motor actuator - circuit malfunction Chevrolet · driver_assistance Data confidence 62%

The control module detected improper operation of the Cruise control system, motor actuator. This is the manufacturer-specific definition used by Chevrolet.

Possible causes

  • Wiring
  • poor connections
  • cruise control motor/actuator
  • ECM

Hyundai

1 interpretation
P1550
Knock Sensor Evaluation IC Error Hyundai · ignition Data confidence 62%

The control module registered the fault condition described as "Knock Sensor Evaluation IC Error". This is the manufacturer-specific definition used by Hyundai.

Possible causes

  • Wiring
  • KS
  • ECM

Kia

1 interpretation
P1550
Knock sensor (KS) - circuit malfunction Kia · ignition Data confidence 62%

The control module detected improper operation of the Knock sensor (KS) circuit. This is the manufacturer-specific definition used by Kia.

Possible causes

  • Wiring
  • poor connection
  • KS
  • ECM

Lexus

1 interpretation
P1550
Battery Current Sensor Circuit Range/Performance Lexus · engine Data confidence 62%

The control module judged the Battery Current signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions. This is the manufacturer-specific definition used by Lexus.

Mazda

1 interpretation
P1550
Power steering pressure (PSP) switch - malfunction Mazda · steering Data confidence 62%

The control module detected improper operation of the Power steering pressure (PSP) switch. This is the manufacturer-specific definition used by Mazda.

Possible causes

  • Wiring
  • PSP switch
  • ECM

Mercedes-Benz

1 interpretation
P1550
AIC compressor torque - implausible signal Mercedes-Benz · engine Data confidence 62%

The control module judged the AIC compressor torque signal implausible when compared with other operating data. This is the manufacturer-specific definition used by Mercedes-Benz.

Possible causes

AIC trouble code(s) stored

MINI

1 interpretation
P1550
Idle Speed Control Valve Closing Solenoid Control Circuit Electrical MINI · engine Data confidence 62%

The control module detected a fault associated with the Idle Speed Control Valve Closing Solenoid Control Circuit Electrical circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.

Opel

1 interpretation
P1550
Electronic throttle system (ETS) - in emergency mode Opel · engine Data confidence 62%

The control module detected a fault associated with the Electronic throttle system (ETS) - in emergency mode 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.

Toyota

1 interpretation
P1550
Battery Current Sensor Circuit Range/Performance Toyota · engine Data confidence 62%

The control module judged the Battery Current signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions. This is the manufacturer-specific definition used by Toyota.

VAG

2 interpretations
P1550
Turbocharger (TC) pressure - control difference VAG · engine Data confidence 62%

The control module detected that closed-loop control of the Turbocharger (TC) pressure deviated from its target. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Intake/exhaust leak
  • hoses interchanged/ not connected
  • MAP sensor
  • TC wastegate regulating valve
  • turbocharger (TC) wastegate actuator
  • TC
Applies to Audi
P1550
Boost Pressure Control Valve (N75): Control Deviation VAG · engine Data confidence 80%

The control module detected that closed-loop control of the Boost Pressure Control Valve (N75) deviated from its target. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17958. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

  • Malfunction Indicator Light (MIL) ON
  • Engine misfiring/juddering/running rough
  • Power Loss / Limp Mode

Possible causes

  • Hoses/Pipes incorrectly connected, disconnected, blocked or leaking
  • Charger Pressure Control faulty

Recommended checks

  • Check Hoses/Pipes to/between Components
  • Check Charge Pressure Control
Applies to Volkswagen

Volvo

1 interpretation
P1550
Vehicle speed, serial communication - implausible signal Volvo · engine Data confidence 62%

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.

Possible causes

  • ABS trouble code(s) stored
  • CAN data bus
  • ABS control module
  • ECM

Related and nearby codes

How to read P1550

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

550

Specific fault index within the subsystem.

Frequently asked questions about P1550

What does P1550 mean?

Diagnostic Trouble Code (12 interpretations). The control module detected improper operation of the Cruise control system, motor actuator. This is the manufacturer-specific definition used by Chevrolet.

Is P1550 generic or manufacturer-specific?

P1550 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Hyundai, Kia, Lexus, Mazda, Mercedes-Benz, MINI, Opel, Toyota, VAG, Volvo. The same number can mean something different on other brands.

Can TuningBot remove P1550 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.

Other file services

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