Diagnostika OBD1 Land Rover
Land Rover
OBD1 pre-96
READING FAULT CODES (USA only)
The Engine Control Module (ECM) is capable of storing fault codes. For U.S. vehicles, these fault codes may be read by switching the ignition switch to position II and observing the fuel injection fault display unit, which is located underneath the right hand front seat, adjacent to the ECM.
NOTE: Image shows display unit with trim removed.
If no codes are present, the display will appear blank. A constantly lit Check Engine warning light indicates that a fault is present.
- Put the ignition switch in position 0 and wait till the load relay drops out.
- Put the ignition switch in position II. The display will be blank if no other faults exist. If other codes exist, the next fault code will be displayed.
- If multiple faults exist, repeat steps 1 through 3 until all faults are cleared.
Code 02 indicates that the ECM has just been reconnected. Switch the ignition switch to position II to clear code 02.
For non-U.S. vehicles (not equipped with a fuel injection fault display), the Lucas diagnostic equipment, part number 60600965, is recommended for reading fault codes.
How to Clear Diagnostic Trouble Codes
CLEARING FAULT CODES (USA only)
When a fault has been corrected, the fault code must be cleared. This is done by performing the following procedure:
- Put the ignition switch in position II.
- Disconnect the Data Link Connector (DLC) , which is located behind R/H side of dash, and wait 5 seconds. Reconnect data link connector.
- Put the ignition switch in position 0 and wait till the load relay drops out.
- Put the ignition switch in position II. The display will be blank if no other faults exist. If other codes exist, the next fault code will be displayed.
- If multiple faults exist, repeat steps 1 through 4 until all faults are cleared. NOTE : Code 02 indicates that the Engine Control Module (ECM) has just been reconnected. Switch the ignition switch to position II to clear code 02.
| Code | Circuit Or Condition |
| 02 | Battery Recently Disconnected |
| 03 | ECM Memory Recently Cleared |
| 12 | MAF Sensor |
| 14 | ECT Sensor |
| 15 | Engine Fuel Temperature Sensor |
| 17 | Throttle Position Sensor |
| 18 | Throttle Position Sensor/Mass Air Flow Sensor |
| 19 | Throttle Position Sensor/Mass Air Flow Sensor |
| 21 | Fuel Tune Select Resistor |
| 23 | Fuel Supply |
| 25 | Ignition Misfire |
| 28 | Air Leak |
| 29 | ECM Memory Check |
| 34 | Injector Bank A |
| 36 | Injector Bank B |
| 40 | Misfire Left Bank |
| 44 | HO2S Left Bank |
| 45 | HO2S Right Bank |
| 48 | Idle Air Control Valve |
| 50 | Misfire Right Bank |
| 59 | Group Faults 23/28 |
| 68 | Vehicle Speed Sensor |
| 69 | Park/Neutral Position Switch |
96 - up OBD2
With Generic OBD II Scan Tool
When an OBD II fault occurs in Land Rover's Generic Engine Management System (GEMS ), the Malfunction Indicator Lamp (MIL ) is illuminated. GEMS Diagnostic Trouble Codes (DTC ) are stored in the Engine Control Module (ECM ) and may be retrieved by connecting a suitable OBD II Scan Tool or the Land Rover TestBook Electronic Tester to the Data Link Connector (DLC ).
The DLC is located at the passenger side footwell.
DTC's can only be Extracted, Diagnosed and Cleared by the TestBook Diagnostic Unit, a required special tool , or an appropriate after market equivalent.
All information regarding DTC's for this model is contained within the Land Rover TestBook Diagnostic Unit. The manufacture does not provide any other information on How to Pull Codes, Trouble Code Descriptions, Diagnosis and Testing of Trouble Codes or How to Clear codes.
DIAGNOSTIC TROUBLE CODES
*Codes* are used to identify the 4 Oxygen Sensors.
A = Bank A of the engine. Cylinder #1 is located on Engine Bank A.
B = Bank B of the engine.
U = Upstream of the Catalytic Converter.
D = Downstream of the Catalytic Converter.
Example:
A D = Oxygen Sensor Engine Bank A, Downstream of Catalytic Converter.
TROUBLE CODE CHART
| P0101 | Mass Air Flow Sensor Signal Error Fault |
| P0102 | Mass Air Flow Sensor Low Out of Range Fault |
| P0103 | Mass Air Flow Sensor High Out of Range Fault |
| P0111 | Air Temperature Sensor Signal Error Fault |
| P0112 | Air Temperature Sensor Low Out of Range Fault |
| P0113 | Air Temperature Sensor High Out of Range Fault |
| P0116 | Engine Coolant Temperature Sensor Falling Temp Fault |
| P0117 | Engine Coolant Temperature Sensor Low Out of Range Fault |
| P0118 | Engine Coolant Temperature Sensor High Out of Range Fault |
| P0121 | Throttle Position Sensor Output Signal Error Fault |
| P0122 | Throttle Position Sensor Low Out of Range Fault |
| P0123 | Throttle Position Sensor High Out of Range Fault |
| P0125 | Engine Coolant Temp Sensor Warm Up Fault |
| P0130 | Oxygen Sensor Cycle Fault *Codes* A U |
| P0131 | Oxygen Sensor Low Voltage *Codes* A U |
| P0132 | Oxygen Sensor High Voltage *Codes* A U |
| P0133 | Oxygen Sensor Slow Response *Codes* A U |
| P0136 | Oxygen Sensor Cycle Fault *Codes* A D |
| P0137 | Oxygen Sensor Low Voltage *Codes* A D |
| P0138 | Oxygen Sensor High Voltage *Codes* A D |
| P0139 | Oxygen Sensor Slow Response *Codes* A D |
| P0150 | Oxygen Sensor Cycle Fault *Codes* B U |
| P0151 | Oxygen Sensor Low Voltage *Codes* B U |
| P0152 | Oxygen Sensor High Voltage *Codes* B U |
| P0153 | Oxygen Sensor Slow Response *Codes* B U |
| P0156 | Oxygen Sensor Cycle Fault *Codes* B D |
| P0157 | Oxygen Sensor Low Voltage *Codes* B D |
| P0158 | Oxygen Sensor High Voltage *Codes* B D |
| P0159 | Oxygen Sensor Slow Response *Codes* B D |
| P0171 | Oxygen Sensor System Too Lean Fault Bank A |
| P0172 | Oxygen Sensor System Too Rich Fault Bank A |
| P0174 | Oxygen Sensor System Too Lean Fault Bank B |
| P0175 | Oxygen Sensor System Too Rich Fault Bank B |
| P0181 | Fuel Temperature Sensor Signal Error Fault |
| P0182 | Fuel Temperature Sensor Low Out of Range Fault |
| P0183 | Fuel Temperature Sensor High Out of Range Fault |
| P0201 | Injector 1 Circuit Fault |
| P0202 | Injector 2 Circuit Fault |
| P0203 | Injector 3 Circuit Fault |
| P0204 | Injector 4 Circuit Fault |
| P0205 | Injector 5 Circuit Fault |
| P0206 | Injector 6 Circuit Fault |
| P0207 | Injector 7 Circuit Fault |
| P0208 | Injector 8 Circuit Fault |
| P0300 | Misfire On Multiple Cylinder |
| P0301 | Misfire Cylinder 1 |
| P03O2 | Misfire Cylinder 2 |
| P03O3 | Misfire Cylinder 3 |
| P0304 | Misfire Cylinder 4 |
| P0305 | Misfire Cylinder 5 |
| P0306 | Misfire Cylinder 6 |
| P0307 | Misfire Cylinder 7 |
| P0308 | Misfire Cylinder 8 |
| P0326 | Continuous Knock Fault Bank A |
| P0327 | Background Noise Low Fault Bank A |
| P0328 | Background Noise High Fault Bank A |
| P0331 | Continuous Knock Fault Bank B |
| P0332 | Background Noise Low Fault Bank B |
| P0333 | Background Noise High Fault Bank B |
| P0335 | Crankshaft Position Sensor Signal Error Fault |
| P0336 | Crankshaft Position Sensor Out of Range Fault |
| P0340 | Camshaft Position Sensor Signal Error Fault |
| P0420 | Catalyst Efficiency Low Fault Bank A |
| P0430 | Catalyst Efficiency Low Fault Bank B |
| P0441 | Evap Purge Valve Incorrect Flow Fault |
| P0442 | Evap System Small Leak Detected Fault |
| P0443 | Evap Purge Valve Open or Short Circuit Fault |
| P0451 | Fuel Tank Pressure Sensor Signal Error Fault |
| P0452 | Fuel Tank Pressure Sensor Low out of Range Fault |
| P0453 | Fuel Tank Pressure Sensor High Out of Range Fault |
| P0461 | Fuel Tank Level Measurement Not Valid Fault |
| P0500 | Vehicle Speed Sensor Signal Error Fault |
| P0506 | Idle Speed Control Engine Speed Low Fault |
| P0507 | Idle Speed Control Engine Speed High Fault |
| P0560 | Battery Voltage Below Minimum Fault |
| P0562 | Measurement Circuit OK Battery Voltage Low Fault |
| P0563 | Battery Voltage Above Maximum Fault |
| P0605 | ECM Self Test Fault |
| P1130 | Oxygen Sensor Fuel Trim at Limit *Codes* A U |
| P1131 | Oxygen Sensor Engine Lean *Codes* A U |
| P1132 | Oxygen Sensor Engine Rich *Codes* A U |
| P1137 | Oxygen Sensor Engine Lean *Codes* A D |
| P1138 | Oxygen Sensor Engine Rich *Codes* A D |
| P1150 | Oxygen Sensor Fuel Trim at Limit *Codes* B U |
| P1151 | Oxygen Sensor Engine Lean *Codes* B U |
| P1152 | Oxygen Sensor Engine Rich *Codes* B U |
| P1157 | Oxygen Sensor Engine Lean *Codes* B D |
| P1158 | Oxygen Sensor Engine Rich *Codes* B D |
| P1171 | Oxygen Sensor System Too Lean Fault Banks A - B |
| P1172 | Oxygen Sensor System Too Rich Fault Banks A - B |
| P1176 | Maximum Positive FMFR Correction Fault |
| P1177 | Maximum Negative FMFR Correction Fault |
| P1178 | Maximum Positive AMFR Correction Fault |
| P1179 | Maximum Negative AMFR Correction Fault |
| P1185 | Oxygen Sensor Heater Circuit Open Upstream |
| P1186 | Oxygen Sensor Heater Circuit Short Upstream |
| P1187 | Oxygen Sensor Heater Circuit Short Upstream |
| P1188 | Oxygen Sensor Heater High Resistance Upstream |
| P1189 | Oxygen Sensor Heater Type 1 Low Resistance Upstream |
| P1190 | Oxygen Sensor Heater Type 2 Low Resistance Upstream |
| P1191 | Oxygen Sensor Heater Circuit Open Downstream |
| P1192 | Oxygen Sensor Heater Circuit Short Downstream |
| P1193 | Oxygen Sensor Heater Circuit Open Downstream |
| P1194 | Oxygen Sensor Heater High Resistance Downstream |
| P1195 | Oxygen Sensor Heater Type 1 Low Resistance Downstream |
| P1196 | Oxygen Sensor Heater Type 2 Low Resistance Downstream |
| P1199 | Fuel Level Sensor Circuit Fault |
| P1201 | Injector 1 Open Circuit or Ground Short Fault |
| P1202 | Injector 2 Open Circuit or Ground Short Fault |
| P1203 | Injector 3 Open Circuit or Ground Short Fault |
| P1204 | Injector 4 Open Circuit or Ground Short Fault |
| P1205 | Injector 5 Open Circuit or Ground Short Fault |
| P1206 | Injector 6 Open Circuit or Ground Short Fault |
| P1207 | Injector 7 Open Circuit or Ground Short Fault |
| P1208 | Injector 8 Open Circuit or Ground Short Fault |
| P1313 | Misfire Catalyst Damage Fault Bank A |
| P1314 | Misfire Catalyst Damage Fault Bank B |
| P1315 | Misfire Persistent Fault |
| P1316 | Misfire Excessive Emissions Fault |
| P1317 | ABS Rough Road Line Low Fault |
| P1318 | ABS Rough Road Line High Fault |
| P1361 | No Ignition Coil Activation Fault Coil 1 |
| P1362 | No Ignition Coil Activation Fault Coil 2 |
| P1363 | No Ignition Coil Activation Fault Coil 3 |
| P1364 | No Ignition Coil Activation Fault Coil 4 |
| P1371 | Early Ignition Coil Activation Fault Coil 1 |
| P1372 | Early Ignition Coil Activation Fault Coil 2 |
| P1373 | Early Ignition Coil Activation Fault Coil 3 |
| P1374 | Early Ignition Coil Activation Fault Coil 4 |
| P1440 | Evap System Purge Valve Stuck Open Fault |
| P1441 | Evap System Purge Valve Flow 1 Fault |
| P1442 | Evap System Purge Valve Blocked Fault |
| P1447 | Evap System Purge Valve Open or Short Circuit Fault |
| P1448 | Evap System Purge Valve Flow 2 Fault |
| P1508 | Idle Speed Control Open Circuit Fault |
| P15O9 | Idle Speed Control Short Circuit Fault |
| P1514 | Neutral Drive Load Fault |
| P1516 | Neutral Drive Gear Change Fault |
| P1517 | Neutral Drive Cranking Fault |
| P1607 | Malfunction Indicator Lamp Short Circuit Fault |
| P1608 | Malfunction Indicator Lamp Open Circuit Fault |
| P1620 | Reprogramming Code Learn Fault |
| P1621 | Serial Data Link Dead Fault |
| P1622 | Repeated Wrong ECM Security Code Fault |
| P1623 | ECM Security Code Fault |
| P1701 | Transfer Box Line Fault |
| P1703 | Transfer Box Line Open Circuit Fault |
| P1708 | Transfer Box Line Short Circuit Fault |
| P1775 | Gearbox Fault |
| P1776 | Gearbox Ignition Retard Request Timeout Fault |
| P1777 | Gearbox Ignition Retard Request Line Fault |
