Mercedes Benz G-Class Fault Codes
You can find common Mercedes Benz G-Class 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 Mercedes Benz G-Class Codes Mercedes Benz G-Class Recall Notices Common Mercedes Benz G-Class Codes
Search Mercedes Benz G-Class Codes
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Mercedes Benz G-Class 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 Mercedes Benz G-Class has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Mercedes Benz G-Class Recalls »
Common G-Class Fault Codes
These are the most common G-Class fault codes that people are searching for.
System Too Lean (Bank 1)Learn More Fixes
Intake Manifold Runner Control Stuck Closed Bank 1Learn More
System Gross Leak Evaporative EmissionLearn More Fixes
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
Diesel Particulate Filter Restriction - Soot AccumulationLearn More
Secondary Air Injection System MalfunctionLearn More
Incorrect Gear RatioLearn More
Random/Multiple Cylinder Misfire DetectedLearn More Fixes
Hydraulic Base Brake FailureLearn More
ABS Acceleration Switch Circuit FailureLearn More
ABS Outlet Valve Coil RF Circuit FailureLearn More
ABS Hydraulic Valve Circuit FailureLearn More
PRNDL Switch Circuit FailureLearn More
Transmission Range Sensor Circuit Malfunction (PRNDL Input)Learn More Fixes
Turbo / Super Charger UnderboostLearn More Fixes
Lost Communication With Instrument Panel Cluster (IPC) Control ModuleLearn More Fixes
Lost Communication With Anti-Lock Brake System (ABS) Control ModuleLearn More
Control Module Communication Bus "A" OffLearn More Fixes
Lost Communication With Glow Plug Control ModuleLearn More Fixes
Lost Communication with TCMLearn More
Contr. Module LockedLearn More
Intake Manifold Runner Control (Stuck Closed)Learn More
Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To GroundLearn More
Calibration Resistor Out Of RangeLearn More
4X4 Initialization FailureLearn More
PSP Switch Out of Self Test RangeLearn More
Transmission Transfer Case Contact Plate 'D' Circuit FailureLearn More
Transmission Transfer Case Shift Motor Short Circuit To BatteryLearn More
Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit FailureLearn More
Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit FailureLearn More
DPFE Sensor Upstream Hose Off Or PluggedLearn More
EGR Flow Out Of Self Test RangeLearn More
Dual Alternator Upper FaultLearn More
Pump Speed Signal FaultLearn More
Inductive Signature Chip Communication ErrorLearn More
DPFE Circuit Low InputLearn More
Fuel Tank Pressure Relief Valve MalfunctionLearn More
GLOW PLUG FAILURELearn More
Traction Control Output Circuit MalfunctionLearn More
Ignition Coil C Primary Circuit MalfunctionLearn 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 or Volume Air Flow Circuit Low Voltage InputLearn More Fixes
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance ProblemLearn More Fixes
Intake Air Temperature Circuit High InputLearn More Fixes
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)Learn 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
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)Learn More Fixes
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)Learn More Fixes
System Too Rich (Bank 1)Learn More Fixes
System Too Rich (Bank 2)Learn More Fixes
Cylinder 1 Misfire DetectedLearn More Fixes
Cylinder 2 Misfire DetectedLearn More Fixes
Cylinder 3 Misfire DetectedLearn More Fixes
Cylinder 4 Misfire DetectedLearn More Fixes
Cylinder 5 Misfire DetectedLearn More Fixes
Cylinder 6 Misfire DetectedLearn More Fixes
Knock Sensor 1 Circuit (Bank 2 or Single Sensor)Learn More Fixes
Knock Sensor 2 Circuit Low Input (Bank 2)Learn More Fixes
Crankshaft Position Sensor A Circuit MalfunctionLearn 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 System Efficiency Below Threshold (Bank 2)Learn More Fixes
Evaporative Emission Control System Incorrect Purge flowLearn More Fixes
Evaporative Emission Control System Leak DetectedLearn More Fixes
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
- Manufacturer: Mercedes Benz
About the G-Class
The G-Class, also called the G-Wagen, is one of the oldest and most iconic models in the Mercedes-Benz lineup. It was first released all the way back in 1979 as the W460.
Since then, there have only been four generations, with the name G-Class first debuting in 1990.
The release of the Mercedes-Benz GL-Class was supposed to replace the model, but sales have continued to remain strong even today. In fact, there has been somewhat of a resurgence for the model in recent years due to its popularity amongst celebrities.
The model has faced competition from other high-performance luxury SUVs during its 40+ years on the market. These have included the Land Rover Defender, Lamborghini Urus, and BMW X7.
Being fitted with such powerful engines, particularly in AMG models, means there is always room for problems. One of the most common of these is fairly broad in scope. Fault code P0171 indicates that the engine is running too lean.
This can cause a huge host of issues when it comes to the G-Wagen’s performance. Unfortunately, it can be a massive undertaking just finding the cause of the issues, let alone repairing it. This is even more true with today’s offerings featuring highly complex engines.
Another fairly serious code is P2006, which is specific to Mercedes-Benz models. This code means that the intake manifold runner is stuck closed. Just like the previous code, this is a serious issue as it can cause performance problems and damage to the engine.
One of the most common causes for this is a faulty intake manifold runner. Other issues can include faults in the runner’s control circuit like damaged wiring.
To make things worse, both of these codes can be very serious. Owners should have them addressed as soon as the code appears to protect their costly SUV, as well as avoid even more expensive repair bills.