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P1523 fault code: what it means

P1523: Crash signal from the airbag module makes no sense to the engine computer. Check airbag module wiring.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. wiring fault between airbag and engine modules
  2. airbag module fault

P1523 by make

Audi

Crash signal from the airbag module makes no sense to the engine computer. Check airbag module wiring.

Usual causes: wiring fault between airbag and engine modules; airbag module fault

BMW

Intake VANOS actuator signal low, bank 1.

Usual causes: faulty intake VANOS solenoid; wiring fault

Honda

Brake booster pressure sensor circuit high.

Usual causes: brake booster pressure sensor; wiring fault

Jeep

VVA (MultiAir) low oil pressure on Renegade. Oil pressure too low for the variable valve system; check oil level, grade and pressure.

Usual causes: low engine oil level; wrong oil viscosity; oil pressure sensor; PCM software

Mini

Intake VANOS actuator signal low, bank 1.

Usual causes: faulty intake VANOS solenoid; wiring fault

Skoda

Crash signal from the airbag module makes no sense to the engine computer. Check airbag module wiring.

Usual causes: wiring fault between airbag and engine modules; airbag module fault

Volkswagen

Crash signal from the airbag module makes no sense to the engine computer. Check airbag module wiring.

Usual causes: wiring fault between airbag and engine modules; airbag module fault

What the repair usually costs

Not sure what P1523 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.