Test Point 7 - Oxygen Regulation Stop (Rich)
TEST POINT 7 - Oxygen regulation Control (rich) - Fault code 1_23Possible Causes, Elimination, Remarks
Mixture preparation problems are preventing the oxygen regulator from operating within its control range. It therefore moves back to its stop.
- Test 1: With the engine running and a CO tester connected, note the CO content (between 0.4-1.2 %).
Too lean: check intake system, Test Point 19 - Resonance Flap