Description - engine management (ENGINE MANAGEMENT SYSTEM - V8) (page 29 of 43)

ENGINE MANAGEMENT SYSTEM - V8

18-2-34 DESCRIPTION AND OPERATION

In the event of fuel injector signal failure any of the following symptoms may be observed:

l

Rough running.

l

Difficult starting.

l

Engine misfire.

l

Possible catalyst damage.

l

High emissions.

l

Adaptive fuelling disabled.

l

Adaptive idle speed control disabled.

The ECM performs three types of fuel injector diagnostic check:

l

Output short circuit to earth

l

Output short circuit to battery voltage

l

Output open circuit

Should a malfunction of the component occur the following fault codes may be evident and can be retrieved by 
TestBook:

P Code

J2012 Description

Land Rover Description

P0201

Injection circuit malfunction - cylinder 1

Injector 1 open circuit

P0261

Cylinder 1 injector circuit low

Injector 1 short circuit to earth

P0262

Cylinder 1 injector circuit high

Injector 1 short circuit to battery supply

P0301

Cylinder 1 misfire detected

Injector 1 excess emissions/catalyst damaging level of 
misfire 

P0202

Injection circuit malfunction - cylinder 2

Injector 2 open circuit

P0264

Cylinder 2 injector circuit low

Injector 2 short circuit to earth

P0265

Cylinder 2 injector circuit high

Injector 2 short circuit to battery supply

P0302

Cylinder 2 misfire detected

Injector 2 excess emissions/catalyst damaging level of 
misfire

P0203

Injection circuit malfunction - cylinder 3

Injector 3 open circuit

P0267

Cylinder 3 injector circuit low

Injector 3 short circuit to earth

P0268

Cylinder 3 injector circuit high

Injector 3 short circuit to battery supply

P0303

Cylinder 3 misfire detected

Injector 3 excess emissions/catalyst damaging level of 
misfire

P0204

Injection circuit malfunction - cylinder 4

Injector 4 open circuit

P0270

Cylinder 4 injector circuit low

Injector 4 short circuit to earth

P0271

Cylinder 4 injector circuit high

Injector 4 short circuit to battery supply

P0304

Cylinder 4 misfire detected

Injector 4 excess emissions/catalyst damaging level of 
misfire 

P0205

Injection circuit malfunction - cylinder 5

Injector 5 open circuit

P0273

Cylinder 5 injector circuit low

Injector 5 short circuit to earth

P0274

Cylinder 5 injector circuit high

Injector 5 short circuit to battery supply

P0305

Cylinder 5 misfire detected

Injector 5 excess emissions/catalyst damaging level of 
misfire 

P0206

Injection circuit malfunction - cylinder 6

Injector 6 open circuit

P0276

Cylinder 6 injector circuit low

Injector 6 short circuit to earth

P0277

Cylinder 6 injector circuit high

Injector 6 short circuit to battery supply

P0306

Cylinder 6 misfire detected

Injector 6 excess emissions/catalyst damaging level of 
misfire

P0207

Injection circuit malfunction - cylinder 7

Injector 7 open circuit

P0279

Cylinder 7 injector circuit low

Injector 7 short circuit to earth

P0280

Cylinder 7 injector circuit high

Injector 7 short circuit to battery supply

P0307

Cylinder 7 misfire detected

Injector 7 excess emissions/catalyst damaging level of 
misfire

P0208

Injection circuit malfunction - cylinder 8

Injector 8 open circuit

P0282

Cylinder 8 injector circuit low

Injector 8 short circuit to earth

P0283

Cylinder 8 injector circuit high

Injector 8 short circuit to battery supply