P1588: Throttle Control Unit Detected Loss of Return Spring

HighPowertrainThrottle System

What does P1588 mean?

P1588 is a diagnostic trouble code indicating "Throttle Control Unit Detected Loss of Return Spring". This code relates to your vehicle's throttle system and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.

Common causes

  • Faulty throttle system 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?

This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.

Get a diagnosis for YOUR car

Code P1588 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

P1587Throttle Control Unit Modulated Command Malfunction
P1589TCU Unable To Control Desired Throttle Angle
P1586Throttle Control Unit Throttle Position Malfunction
P1585Throttle Control Unit Malfunction