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P1035

P1035 - Shut-off path abnormality by external monitoring IC and CPU

Bosch · ECU Troubleshooting

What does P1035 mean?

This error means the shutoff path is malfunctioning due to an abnormality detected between the external monitoring IC and the CPU. This impacts the system's safety functions.

Common Causes

  • Communication error between monitoring IC and CPU
  • Faulty external monitoring IC
  • CPU processing error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the system by cycling the power.

  2. 2

    Ensure stable power and connections to the ECU.

  3. 3

    If the error persists, the ECU requires professional diagnosis.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

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Source: Bosch ECU Troubleshooting
Open Manual (Page 7)Search more codes in this manual