Assist Map Number Un-Writing


Table of contents

C1581 TOYOTA Possible Causes

  • Faulty Power Steering ECU
  • Power Steering ECU harness is open or shorted
  • Power Steering ECU circuit poor electrical connection

How do I fix code C1581 TOYOTA?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the C1581 TOYOTA code

  The cost of diagnosing the C1581 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1581 TOYOTA Description

  The Power Steering ECU assy outputs this Diagnostic Trouble Code (DTC) when it determines that assist map is not written in the ECU. It is necessary to replace the Power Steering ECU assy when this code is output because this malfunction cannot be repaired.

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