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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (2.9L Pcm 1 - DTCS P2100-00 To P3405-00) >> DTC Troubleshooting >> P2178-00-System Too Rich Off Idle Bank 1 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FUEL 
    1. Check the quality of the fuel.

      Is the quality incorrect?

      Yes 

      • Empty the tank and fill it with the correct quality fuel.

      No 

      • Go To  2
  2. THROTTLE BODY CHECK 
    1. Check for dirt on the throttle of Throttle Body.

      Is there dirt present?

      Yes 

      No 

      • Go To  3
  3. AIR SUPPLY SYSTEM CHECK 
    1. Check for disconnections in the air supply system.

      Are there any disconnections?

      Yes 

      No 

      • Go To  4
  4. CHECK ENGINE OIL DECAY USING SCAN TOOL 
    1. Connect the scan tool to the PCM-1 and check that the "Engine oil decay" parameter is not lower than 20%.

      Is the Engine oil decay parameter lower than 20%

      Yes 

      • Change the engine oil.

      No 

      • Go To  5
  5. CHECK FUEL RAIL PRESSURE SENSOR USING SCAN TOOL 
    1. Check that the Fuel Rail Pressure Sensor is working correctly.

      Is the operation of the Fuel Rail Pressure Sensor incorrect?

      Yes 

      No 

      • Go To  6
  6. BANK 1 MAP SENSOR OPERATION CHECK 
    1. Check that the Bank 1 MAP Sensor is working properly.

      Is the Bank 1 MAP Sensor operating properly?

      Yes 

      No