Audi Workshop Service and Repair Manuals > A2 > Power unit | MM-MPI injection and ignition system (4-cylinder) | Self diagnosis, V.A.G Inspection Service | Readiness code

MM-MPI injection and ignition system (4-cylinder)

Readiness code

Reading readiness code

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

Work sequence

‒ Connect the fault reader V.A.G 1551. Then switch ignition on and select engine control unit with the "Address word" 01.
(Connecting fault reader and selecting engine control unit
.)

→ Indicated on display:

Rapid data transfer HELP

Select function XX

‒ Press keys 1 and 5 for the "Readiness code" function and confirm entry with Q key.

Must appear on display when all diagnosis functions have been successfully completed:

→ Indicated on display:

Readiness code

00000000 - Test complete

‒ Press ⇒key.
‒ Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.

→ Indicated on display:

Readiness code

00101101 - Test not complete

One of the diagnostic checks has not run through successfully:

Significance of figures in 8-digit number block for readiness code


The readiness code is generated only when all display zones show 0
1	2	3	4	5	6	7	8	Diagnostic function
							0	Catalytic converter
						0		Catalytic converter heating (currently no diagnosis/always "0")
					0			Activated charcoal filter system (tank venting system)
				0				Secondary air system (not fitted/always "0")
			0					Air conditioner (currently no diagnosis/always "0")
		0						Lambda probes
	0							Lambda probe heating
0								Exhaust gas recirculation

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