Procedure for Acquiring Flash Codes from your BMW
Instructions by Ben Thongsai, bimmers.com, inc.
Note: Your BMW must have Motronic version 1.1 or higher. Motronic 1.0
cars do not have self diagnostic flash code capability (as evidenced by the
lack of a Check Engine light).
I. Determine which version of the Motronic is in your BMW by
consulting the DME Application Guide (or see table below).
II. Sit in the driver's seat.
III. Turn the igntion to the On position, but do not start the car.
IV. Immediately depress the accelerator fully and release fully 5 times
in quick succession.
V. Wait a couple of seconds.
VI. The Check Engine light will flash once, then start to blink. All codes
are comprised of 4 digits. The number of blinks corresponds to the
fault code. For example, ON, pause, ON ON, pause, ON ON, pause,
ON ON, off would be a 1222.
VII. Each four digit code will be flashed sequentially. When the codes
start to repeat, all stored codes have been displayed.
VIII. Turn the ignition Off.
BMW Diagnostic Flash Codes
DME Version --> M1.x M1.x M3.1 M3.3 M3.3.1
DME Control Unit 1211 2211 1211 1211 1211
Air Mass/Volume Sensor 1215 2215 1215 1215 1215
Throttle Potentiometer 1216 -- 1216 1216 1216
Output Stage, Group #1 -- -- -- 1218 1218
Output Stage, Group #2 -- -- -- 1219 1219
EGO Sensor #1 1221 2221 1221 1221 1221
EGO Sensor #2 -- -- -- 1212 --
Lambda Control #1 1222 2222 1222 1222 1222
Lambda Control #2 -- -- -- 1213 --
Coolant Temp. Sensor 1223 -- 1223 1223 1223
Intake Air Temp. Sensor 1224 -- 1224 1224 1224
Knock Sensor #1 -- -- -- 1225 1225
Knock Sensor #2 -- -- -- 1226 1226
Knock Sensor #3 -- -- -- 1227 --
Knock Sensor #4 -- -- -- 1228 --
Battery Voltage/DME Main Relay 1231 2231 1231 1231 1231
Throttle Idle Switch 1232 2232 -- -- --
Throttle WOT Switch 1233 2233 -- -- --
Speedometer "A" Signal -- -- -- 1234 1234
A/C Compressor cut off -- -- -- 1237 1237
A/C Compressor -- -- -- 1242 1242
Crankshaft Pulse Sensor -- -- -- 1243 1243
Camshaft Sensor -- -- -- 1244 1244
Intervention, AEGS -- -- -- 1245 1245
Ign. Secondary Monitor -- -- -- 1247 1247
Fuel Injectors (group #1) 1251 2251 -- -- --
Fuel Injectors (group #2) 1252 2252 -- -- --
Fuel Injector #1 -- -- 1251 1251 1251
Fuel Injector #2 -- -- 1252 1252 1252
Fuel Injector #3 -- -- 1253 1253 1253
Fuel Injector #4 -- -- 1254 1254 1254
Fuel Injector #5 -- -- 1255 1255 1255
Fuel Injector #6 -- -- 1256 1256 1256
Fuel Injector #7 -- -- -- 1257 --
Fuel Injector #8 -- -- -- 1258 --
Fuel Pump Relay Control 1261 2261 1261 1261 1261
Idle Speed Actuator 1262 -- 1262 1262 1262
Purge Valve 1263 2263 1263 1263 1263
EGO Heater 1264 2264 1264 1264 1264
Fault Lamp (check engine) -- -- -- 1265 1265
VANOS -- -- -- -- 1266
Air Pump Relay Control -- -- -- 1267 1267
Ignition Coil, #1 -- -- -- 1271 1271
Ignition Coil, #2 -- -- -- 1272 1272
Ignition Coil, #3 -- -- -- 1273 1273
Ignition Coil, #4 -- -- -- 1274 1274
Ignition Coil, #5 -- -- -- 1275 1275
Ignition Coil, #6 -- -- -- 1276 1276
Ignition Coil, #7 -- -- -- 1277 --
Ignition Coil, #8 -- -- -- 1278 --
Control Unit Memory Supply -- -- -- 1281 1281
Fault (code) Memory -- -- -- 1282 1282
Fuel Injector Output Stage, no cyl # -- -- 1283 1283 1283
Knock Control Test Pulse -- -- -- 1286 1286
No Failure 1444 2444 1444 1444 1444
