Land Rover Defender Fault Codes
You can find common Land Rover Defender fault codes on this page that when clicked take you to a detailed description.
You can also type in the fault code you are getting below to find a more detailed description.
Jump To:Search Land Rover Defender Codes Land Rover Defender Recall Notices Common Land Rover Defender Codes
Search Land Rover Defender Codes
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Land Rover Defender Recalls
When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.
You can check to see if your Land Rover Defender has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Land Rover Defender Recalls »
Common Defender Fault Codes
These are the most common Defender fault codes that people are searching for.
Mass or Volume Air flow Circuit Range/Performance ProblemLearn More Fixes
Engine Overboost ConditionLearn More Fixes
Exhaust Gas Recirculation Circuit Range/PerformanceLearn More
Turbocharger/Supercharger Boost Control 'A' Circuit HighLearn More
Turbo / Super Charger UnderboostLearn More Fixes
Turbocharger/Supercharger Boost Control 'A' Circuit Range/PerformanceLearn More
Evap Purge Valve Incorrect Flow FaultLearn More Fixes
Oxygen Sensor System Too Rich Fault Bank BLearn More Fixes
Oxygen Sensor System Too Lean Fault Bank ALearn More Fixes
Oxygen Sensor System Too Lean Fault Bank BLearn More Fixes
Heated oxygen sensor (H02S) 1 (upstream), bank 2 – control malfunctionLearn More
System Too Lean at Idle DTCLearn More Fixes
Fuel Delivery System Malfunction - LowLearn More
Maximum Negative AMFR Correction FaultLearn More
Electrodrive Fan 2 Operational Failure (Passenger Side)Learn More
PCM - IDM Communications ErrorLearn More
Oxygen Sensor System Too Lean Fault Banks A & BLearn More
Igniter Circuit Malfunction No. 1 (Toyota, Lexus)Learn More
EGR Different Pressure Sensor Signal too LowLearn More
Fuel Pump A Low Flow/PerformanceLearn More
MAF Sensor In Range But Higher Than ExpectedLearn More
Immobilizer/ECM Communication ErrorLearn More
Crank / Cam Sensor Range / PerformanceLearn More
Maximum Positive AMFR Correction FaultLearn More
Turbo Boost Pressure LowLearn More
Turbo/Supercharger Boost System PerformanceLearn More
Diesel Particulate Filter Restriction - Soot AccumulationLearn More
Control ModuleLearn More
High Speed CAN Communication BusLearn More Fixes
Lost Communication With Instrument Panel Cluster (IPC) Control ModuleLearn More Fixes
Audio Bezel is Not RespondingLearn More
Engine Coolant Level Lamp Circuit Short to GroundLearn More
Knock Sensor 1 Circ. Short to GroundLearn More
ESO - Engine Shut Off Solenoid FaultLearn More
Misfire Excessive Emissions FaultLearn More
Immobilizer to PCM Signal ErrorLearn More
Evap Emission Control Sys Vent Control Valve CircuitLearn More
Air Pump Circuit Malfunction/ (AIR) System Bank 1Learn More
Serial Data Link Dead FaultLearn More
ECM Security Code FaultLearn More
Intake Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Intake Camshaft Position Timing - Over-Retarded (Bank 1)Learn More Fixes
Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)Learn More Fixes
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)Learn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor ALearn More Fixes
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor BLearn More Fixes
Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2Learn More Fixes
Mass Air Flow Sensor Low Out of Range FaultLearn More Fixes
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance ProblemLearn More Fixes
Air Temperature Sensor High Out of Range FaultLearn More Fixes
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
Oxygen Sensor Low Voltage *Codes* A ULearn More Fixes
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)Learn More Fixes
Oxygen Sensor Low Voltage *Codes* A DLearn More Fixes
Oxygen Sensor High Voltage *Codes* A DLearn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)Learn More Fixes
Oxygen Sensor System Too Rich Fault Bank ALearn More Fixes
Misfire On Multiple CylinderLearn More Fixes
Misfire Cylinder 1Learn More Fixes
Cylinder 2 Misfire DetectedLearn More Fixes
Cylinder 3 Misfire DetectedLearn More Fixes
Misfire Cylinder 4Learn More Fixes
Misfire Cylinder 5Learn More Fixes
Misfire Cylinder 6Learn More Fixes
Knock Sensor 1 Circuit (Bank 2 or Single Sensor)Learn More Fixes
Background Noise Low Fault Bank BLearn More Fixes
Crankshaft Position Sensor Signal Error FaultLearn More Fixes
Camshaft Position Sensor Circuit Range/PerformanceLearn More Fixes
Exhaust Gas Recirculation Flow Insufficient DetectedLearn More Fixes
Catalyst System Efficiency Below Threshold (Bank 1)Learn More Fixes
Catalyst Efficiency Low Fault Bank BLearn More Fixes
Evap System Small Leak Detected FaultLearn More Fixes
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
Evaporative Emission Control System Vent Valve/Solenoid Circuit MalfunctionLearn More Fixes
- Manufacturer: Land Rover
About the Defender
The Defender is not only one of the oldest SUVs in the Land Rover lineup, but one of the oldest SUVs on the market today. The first model was released in 1984. Since then, there have been a variety of models under the nameplate.
These have included the 90 and 110 model, Defender, and the 2020 Defender, also called the New Defender.
The model has been a staple of the off-road class for many years. This often results in other manufacturers hoping to compete with it. Some of the most notable rivals include the Toyota Land Cruiser, Audi Q7, and even the Jeep Wrangler.
While the Defender itself is certainly an iconic vehicle it is still subject to Land Rover’s infamous reliability issues.
One of the most common issues these models have reportedly suffered is P0101, which represents an issue with the mass airflow (MAF) sensor circuit. This can put the vehicle into limp mode, making it a serious issue.
Despite the code indicating an issue with the MAF sensor, some owners have found success in cleaning or replacing both this sensor along with the manifold absolute pressure (MAP) sensor.
The next most common code only affects a few of the Defender models because it has to do with an overboost condition. That being said, there has been a huge array of turbodiesels and supercharged or turbocharged petrol engines in the lineup, meaning the problem can appear more often than in other models.
Fault code P0234 indicates that there is too much boost pressure coming from the forced induction system.
This code is often a result of a faulty turbocharger actuator as it cannot divert gas properly from the forced induction system, providing excessive boost.
This is another serious problem for Defender owners and it should be addressed as soon as possible to prevent further damage to expensive components.