Stomp Codes

The procedure for performing the stomp test on Motronic 1.3/1.7 is as follows:

  1. Get in your vehicle and shut all doors/trunk.
  2. Turn key to “ON” position, but do not start the vehicle.
  3. Fully depress the accelerator pedal, then completely release for between 0.5 and 1.0 seconds. Repeat this a total of 5 times within 10 seconds.
  4. The CEL will flash once, then it will flash a Fehler Lampen Ort, or Fault Light Code (FLC).
  5. The code will flash as a succession of blinks, with a short pause between each number.
    1. eg. “blink-blink-pause, blink-pause, blink-blink-blink-pause, blink-pause” would be code “2-1-3-1”
    2. If there are no faults, it will flash the code “1444” (for 4, 6, and 8 cylinder engines) or “2444” (for 12 cylinder engines).

The procedure for performing the stomp test on Motronic 3.x is very similar, but differs in the following ways:

  1. The time between key and pedal action must be shorter.
  2. The pedal must be depressed, released, and repeated in quicker succession.
  3. It is a bit trickier and may take a few attempts.

The error codes are as follows:

SYSTEMCODEComments.

ECU

1211

ECU component failure or bad chip.

AIR FLOW METER

1215

 

THROTTLE POSITION SENSOR

1216

 

OUTPUT GROUP 1

1218

 

OUTPUT GROUP 2

1219

 

EGO(AFR) Sensor 1

1221

 

EGO(AFR) Sensor 2

1212

 

LAMBDA 1

1222

 

LAMBDA 2

1213

 

COOLANT TEMP SENSOR

1223

 

INTAKE AIR TEMP SENSOR

1224

 

KNOCK SENSOR 1

1225

 

KNOCK SENSOR 2

1226

 

KNOCK SENSOR 3

1227

 

KNOCK SENSOR 4

1228

 

BATTERY

1231

 

TPS (IDLE SWITCH)

1232

 

TPS (WIDE OPEN SWITCH)

1233

 

SPEEDOMETER

1234

 

A/C COMPRESSOR CUT OFF

1237

 

A/C COMPRESSOR

1242

 

CRANKSHAFT POSITION SENSOR

1243

 

CAMSHAFT POSITION SENSOR

1244

 

AUTOMATIC TRANSMISSION ERROR

1245

 

IGNITION TIME MONITOR EXCEEDED

1247

 

INJECTOR 1 (OR BANK 1)

1251

 

INJECTOR 2 (OR BANK 2)

1252

 

INJECTOR 3

1253

 

INJECTOR 4

1254

 

5

1255

 

6

1256

 

7

1257

 

8

1258

 

FUEL PUMP RELAY

1261

 

IDLE ACTUATOR

1262

 

PURGE VALVE

1263

 

EGO HEATER

1264

 

FAULT LAMP

1265

 

VANOS

1266

 

AIR PUMP RELAY

1267

 

IGNITION COIL 1

1271

 

IGNITION COIL 2

1272

 

IGNITION COIL 3

1273

 

IGNITION COIL 4

1274

 

IGNITION COIL 5

1275

 

IGNITION COIL 6

1276

 

IGNITION COIL 7

1277

 

IGNITION COIL 8

1278

 

INTERNAL MEMORY ERROR

1281

 

FAULT CODE MEMORY ERROR

1282

 

INJECTION TIME OUTSIDE LIMITS

1283

 

KNOCK CONTROL SYSTEM

1286

 

No Failures

1444

Procedure: 1) Turn key to run, but not start 2) After EML light goes out, depress accelerator pedal to the floor and release, 5 times in about 5 seconds. 3) Car will confirm with a long flash, then begin flashing out your codes.. if it doesn't, turn the key off and repeat 4) Each code repeats itself, so you have to stomp 5 times to get the next code Note: For the V12 engines you'll have to do the procedure twice, once with 5 stomps to get bank one codes, and then 6 stomps for Bank 2. (cylinders 7-12) Also note: bank 1 codes all start with 1, bank 2 codes start with 2. E.g. 1264, 1222 on my car in the video, and bank 2 reported only 2444 (no codes). It's also important to realize that due to the crossed intake design, the intakes are on the opposite side of the engine bank in question. (Bank 1, 1-6 on the left, bank 2, 7-12 on the right IIRC)

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