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TuningBot DTC Database · v4.37.15

P1520 Diagnostic Trouble Code (13 interpretations)

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

Chrysler

1 interpretation
P1520
Gear Indicator System Chrysler · engine Data confidence 62%

The control module detected a fault associated with the Gear Indicator System circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Confirm the exact vehicle, ECU and software context
  • Inspect relevant wiring and connectors
  • Check applicable OEM service information

Dodge

1 interpretation
P1520
Cruise control master switch - malfunction Dodge · driver_assistance Data confidence 62%

The control module detected improper operation of the Cruise control master switch. This is the manufacturer-specific definition used by Dodge.

Possible causes

  • Wiring
  • connectors
  • data bus
  • ignition switchcontrol module
  • ECM

Ford

1 interpretation
P1520
Intake Manifold Runner Control Circuit Fault Ford · engine Data confidence 80%

The control module registered the fault condition described as "Intake Manifold Runner Control Circuit Fault". This is the manufacturer-specific definition used by Ford.

Possible causes

  • Wiring
  • mechanical fault
  • vacuum hoses
  • IMRC actuator
  • ECM

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Inspect relevant wiring and connectors
  • Check power supplies and grounds
  • Compare commanded and measured values
  • Check applicable OEM service information

Land Rover

1 interpretation
P1520
Intake manifold air control system - circuit malfunction Land Rover · engine Data confidence 62%

The control module detected improper operation of the Intake manifold air control system circuit. This is the manufacturer-specific definition used by Land Rover.

Possible causes

  • Wiring
  • intake manifold air control system

Lexus

1 interpretation
P1520
Stop lamp switch - signal malfunction Lexus · body Data confidence 80%

The control module detected improper operation of the Stop lamp switch. This is the manufacturer-specific definition used by Lexus.

Possible causes

  • Wiring
  • stop lamp switch
  • ECM

Mazda

1 interpretation
P1520
Intake manifold air control - circuit malfunction Mazda · engine Data confidence 62%

The control module detected improper operation of the Intake manifold air control circuit. This is the manufacturer-specific definition used by Mazda.

Possible causes

  • Wiring
  • air control solenoid
  • ECM

Mercedes-Benz

1 interpretation
P1520
Cruise Control Switch S40 Mercedes-Benz · driver_assistance Data confidence 62%

The control module detected a fault associated with the Cruise Control Switch S40 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.

MINI

1 interpretation
P1520
Camshaft Position Actuator 'B' Bank 1 MINI · engine Data confidence 62%

The control module detected a fault associated with the Camshaft Position Actuator 'B' Bank 1 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
P1520
Electronic throttle system (ETS) - supply voltage Opel · battery Data confidence 62%

The control module detected a fault associated with the Electronic throttle system (ETS) - supply voltage 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
P1520
Stop lamp switch - signal malfunction Toyota · body Data confidence 80%

The control module detected improper operation of the Stop lamp switch. This is the manufacturer-specific definition used by Toyota.

Possible causes

  • Wiring
  • stop lamp switch
  • ECM

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Compare commanded and measured values
  • Check applicable OEM service information

VAG

2 interpretations
P1520
Intake manifold air control solenoid 2 - open circuit VAG · engine Data confidence 62%

The control module detected an interruption (open circuit) in the Intake manifold air control solenoid 2 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit
  • intake manifold air control solenoid
Applies to Audi
P1520
Intake manifold air control solenoid 2 - open circuit VAG · engine Data confidence 80%

The control module detected an interruption (open circuit) in the Intake manifold air control solenoid 2 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.

Possible causes

  • Wiring open circuit
  • intake manifold air control solenoid
Applies to Volkswagen

Volvo

1 interpretation
P1520
Accelerator pedal position (APP) sensor - implausible signal Volvo · engine Data confidence 62%

The control module judged the Accelerator pedal position (APP) signal implausible when compared with other operating data. This is the manufacturer-specific definition used by Volvo.

Possible causes

  • Wiring
  • APP sensor
  • ECM

Related and nearby codes

How to read P1520

P

Powertrain: engine, transmission and driveline systems.

1

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

520

Specific fault index within the subsystem.

Frequently asked questions about P1520

What does P1520 mean?

Diagnostic Trouble Code (13 interpretations). The control module detected a fault associated with the Gear Indicator System circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.

Is P1520 generic or manufacturer-specific?

P1520 is a manufacturer-specific code. In this database it is documented for: Chrysler, Dodge, Ford, Land Rover, Lexus, Mazda, Mercedes-Benz, MINI, Opel, Toyota, VAG, Volvo. The same number can mean something different on other brands.

Can TuningBot remove P1520 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.

Other file services

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