2001 Land Rover Discovery Series II SD 4.0L Poor Fuel Economy, MIL Lamp on, Chugging
Both upstream O2S replaced, same codes are generated. Can't find vacuum leak if there is one. Fuse 2 ok.
FIX posted 10/25/2012
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Message Closed w/FIX
Vehicle Data2001 Land Rover Discovery Series II SD
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2001 Land Rover Discovery Series II SD
VIN | SALTL15421 |
Engine | 4.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Poor Fuel Economy, MIL Lamp on, Chugging |
Occurs | Under Load, on Accel, Intermittently |
Trouble Codes
00135 | O2S Heater circuit bank 1 sensor 1 |
P0134 | Air Fuel Sensor (Bank 1 Sensor 1) Heater System Malfunction |
P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction |