P0959: ASM Mode Circuit Intermittent

MediumPowertrainEngine Electronics

What does P0959 mean?

P0959 is a diagnostic trouble code indicating "ASM Mode Circuit Intermittent". This code relates to your vehicle's engine electronics and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.

Common causes

  • Faulty engine electronics component
  • Wiring or connector issue in the related circuit
  • Failed sensor providing incorrect readings
  • Software/calibration issue requiring ECU update
  • Related component causing secondary fault

What should you do?

Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.

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Code P0959 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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Related codes

P0958ASM Mode Circuit High
P0960Pressure Control Solenoid A Control Circuit / Open
P0957ASM Mode Circuit Low
P0961Pressure Control Solenoid A Control Circuit Range/Performance