Description (page 3 of 9)

ENGINE MANAGEMENT SYSTEM - SIEMENS

18-4-34 DESCRIPTION AND OPERATION

0268

Fuel injector 3

Short circuit to battery

Yes

No

A

0270

Fuel injector 4

Short circuit to earth

Yes

No

A

0271

Fuel injector 4

Short circuit to battery

Yes

No

A

0273

Fuel injector 5

Short circuit to earth

Yes

No

A

0274

Fuel injector 5

Short circuit to battery

Yes

No

A

0276

Fuel injector 6

Short circuit to earth

Yes

No

A

0277

Fuel injector 6

Short circuit to battery

Yes

No

A

0301

Cylinder 1

Misfire detected

Yes

No

B

0302

Cylinder 2

Misfire detected

Yes

No

B

0303

Cylinder 3

Misfire detected

Yes

No

B

0304

Cylinder 4

Misfire detected

Yes

No

B

0305

Cylinder 5

Misfire detected

Yes

No

B

0306

Cylinder 6

Misfire detected

Yes

No

B

0313

Misfire detection

Misfire detected at low fuel level

Yes

No

B

0327

LH bank knock sensor

Open circuit

Yes

No

B

0332

RH bank knock sensor

Open circuit

Yes

No

B

0335

CKP sensor

Open circuit or No signal

No

No

A

0336

CKP sensor

Signal implausible

No

No

A

0337

CKP sensor

Short circuit to earth

No

No

—

0338

CKP sensor

Short circuit to battery

No

No

—

0339

CKP sensor

Open circuit/no signal

No

No

—

0340

CMP sensor

Open circuit/no signal

Yes

No

A

0341

CMP sensor

Signal implausible

Yes

No

A

0351

Ignition coil 1

No spark

No

No

A

0352

Ignition coil 2

No spark

No

No

A

0353

Ignition coil 3

No spark

No

No

A

0354

Ignition coil 4

No spark

No

No

A

0355

Ignition coil 5

No spark

No

No

A

0356

Ignition coil 6

No spark

No

No

A

0420

LH bank catalytic converter

Efficiency below threshold – light 

off too long

Yes

No

C

0430

RH bank catalytic converter

Efficiency below threshold – light 

off too long

Yes

No

C

0441

Diagnostics

EVAP purge flow test failure

Yes

No

B

0442

EVAP system

Minor leak

Yes

No

F

0443

Purge valve

Short circuit to battery

Yes

No

A

0444

Purge valve

Open circuit

Yes

No

A

0445

Purge valve

Short circuit to earth

Yes

No

A

0455

EVAP system

Major leak

Yes

No

F

0500

Vehicle speed signal

Signal implausible

Yes

No

B

0505

ECM idle speed control

System malfunction

Yes

No

A

0600

CAN Bus

CAN bus off

Yes

No

A

0606

ECM

Processor fault

Yes

No

A

1071

LH bank front HO2S

Too lean

Yes

No

C

1072

LH bank front HO2S

Too rich

Yes

No

C

1074

RH bank front HO2S

Too lean

Yes

No

C

1075

RH bank front HO2S

Too rich

Yes

No

C

1101

MAF sensor

Signal implausible for throttle 

angle

No

No

—

P Code No.

Component/Signal

Fault Description

Warning Lamp

Drive Cycle

SERVICE 

ENGINE 

(MIL)

SERVICE 

ENGINE 

SOON