CodeRegistry
Brands
  1. Home
  2. Bosch
  3. ECU Troubleshooting
  4. P1198
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

P1198

P1198 - Low oil pressure fault alarm

Bosch · ECU Troubleshooting

What does P1198 mean?

This alarm indicates that the engine oil pressure is below the acceptable minimum level. Low oil pressure can cause serious engine damage.

Common Causes

  • Low engine oil level
  • Faulty oil pump
  • Blocked oil passages
  • Leaking oil system

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the engine oil level and add oil if necessary.

  2. 2

    Inspect for oil leaks around the engine.

  3. 3

    If the level is correct and there are no leaks, the oil pump or pressure may need to be checked by a mechanic.

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

Related Faults

ECU internal faultECU internal fault - Electronic Control Unit internal errorP0008P0008 - No signal on both crankshaft and camshaft speed sensorP0122P0122 - Accelerator sensor 1 error (voltage low)
Source: Bosch ECU Troubleshooting
Open Manual (Page 7)Search more codes in this manual