Test Group Identification

BMW supplies test group information in the following 6 categories:

• CATALYST MONITORING 
• MISFIRE MONITORING 
• EVAPORATIVE SYSTEM MONITORING 
• SECONDARY AIR SYSTEM MONITORING 
• FUEL SYSTEM MONITORING 
• OXYGEN SENSOR MONITORING 

Specific engine family test group identification number (for example: YBMXT04.4E53  ) can be found on emission label in engine compartment. To cross reference test group category (catalyst monitoring, misfire monitoring, etc.) see BMW TEST GROUP IDENTIFICATION  table.

Engine Family Test Group (1)		Engine Code/Displacement	Models
Catalyst Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
Misfire Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
Evaporative System Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
Secondary Air System Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
Fuel System Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
Oxygen Sensor Monitoring
YBMXT04.4E53		M62/4.4L V8	X5
YBMXT04.453M		M62/4.4L V8	X5
YBMXV02.8LEV		M52/2.8L V6	Z3 2.5L, Z3 2.8L, Z3 Coupe, 328i, 328Ci, 323i, 323Ci, 323iCab, 323i Tour, 528i & 528Ti
YBMXV03.2S52		S52/3.2L V6	M3, M Coupe & M Roadster
YBMXV04.4LEV		M62/4.4L V8	540i, 540iS, 540i PL, 540iT, 740i, 740iL, 740iS & 740il PL
YBMXV04.9S62		S62/4.9L V8	M5 & Z8
YBMXVO5.4LEV		M73/5.4L V12	750iL & 750il PL
(1) Test group reference identification can be found on underhood emission label. LEV stands for Low Emission Vehicle  . U1LEV stands for Ultra Low Emission Vehicle  . TLEV stands for Transitional Low Emission Vehicle  .