Description - engine management (ENGINE MANAGEMENT SYSTEM - V8) (page 27 of 43)

ENGINE MANAGEMENT SYSTEM - V8

18-2-32 DESCRIPTION AND OPERATION

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

P1129

O

2

 sensors swapped bank to bank (sensor 1)

Front sensors transposed

P0130

O

2

 sensor circuit malfunction (bank 1, sensor 1) Front sensor LH bank stoichiometric ratio outside 

operating band

P0132

O

2

 sensor circuit high voltage (bank 1, sensor 1) Front sensor LH bank short circuit to battery supply

P0134

O

2

 sensor circuit no activity detected (bank 1, 

sensor 1)

Front sensor LH bank open circuit 

P0150

O

2

 sensor circuit malfunction (bank 2, sensor 1) Front sensor RH bank stoichiometric ratio outside 

operating band

P0152

O

2

 sensor circuit high voltage (bank 2, sensor 1) Front sensor RH bank short circuit to battery supply

P0154

O

2

 sensor circuit no activity detected (bank 2, 

sensor 1)

Front sensor RH bank open circuit

P0136

O

2

 sensor circuit malfunction (bank 1, sensor 2) Rear sensor LH bank stoichiometric ratio outside 

operating band (NAS only)

P0137

O

2

 sensor circuit low voltage (bank 1, sensor 2)

Rear sensor LH bank short circuit to earth (NAS only)

P0138

O

2

 sensor circuit high voltage (bank 1, sensor 2) Rear sensor LH bank short circuit to battery supply 

(NAS only)

P0140

O

2

 sensor circuit no activity detected (bank 1, 

sensor 2)

Rear sensor LH bank open circuit (NAS only)

P0156

O

2

 sensor circuit malfunction (bank 2, sensor 2) Rear sensor RH bank stoichiometric ratio outside 

operating band (NAS only)

P0157

O

2

 sensor circuit low voltage (bank 2, sensor 2)

Rear sensor RH bank short circuit to earth (NAS only)

P0158

O

2

 sensor circuit high voltage (bank 2, sensor 2) Rear sensor RH bank short circuit to battery voltage 

(NAS only)

P0160

O

2

 sensor circuit no activity detected (bank 2, 

sensor 2)

Rear sensor RH bank open circuit (NAS only)

P0133

O

2

 sensor circuit slow response (bank 1, sensor 

1)

Front sensor aged - period time too long/too short LH 
bank

P0153

O

2

 sensor circuit slow response (bank 2, sensor 

1)

Front sensor aged - period time too long/too short RH 
bank

P1170

Downstream fuel trim malfunction (bank 1)

Front sensor aged - rear HO

2

S adaption too lean/too 

rich LH bank (NAS and EU-3 only)

P1173

Downstream fuel trim malfunction (bank 2)

Front sensor aged - rear HO

2

S adaption too lean/too 

rich RH bank (NAS and EU-3 only)

P0135

O

2

 sensor heater circuit malfunction (bank 1, 

sensor 1)

Front sensor heater LH bank -  short/open circuit

P0141

O

2

 sensor heater circuit malfunction (bank 1, 

sensor 2)

Rear sensor heater LH bank -  short/open circuit (NAS 
and EU-3 only)

P0155

O

2

 sensor heater circuit malfunction (bank 2, 

sensor 1)

Front sensor heater RH bank -  short/open circuit

P0161

O

2

 sensor heater circuit malfunction (bank 2, 

sensor 2)

Rear sensor heater RH bank -  short/open circuit (NAS 
and EU-3 only)

P0420

-

Catalyst efficiency deteriorated - LH bank (NAS and 
EU-3 only)

P0430

-

Catalyst efficiency deteriorated - RH bank (NAS and 
EU-3 only)