Jeep Wagoneer (incl. Grand) Fault Codes
You can find common Jeep Wagoneer (incl. Grand) 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.
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Search Jeep Wagoneer (incl. Grand) Codes
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Jeep Wagoneer (incl. Grand) 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 Jeep Wagoneer (incl. Grand) has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Jeep Wagoneer (incl. Grand) Recalls »
Common Wagoneer (incl. Grand) Fault Codes
These are the most common Wagoneer (incl. Grand) fault codes that people are searching for.
Throttle/Pedal Position Sensor/Switch A Circuit High InputLearn More
Camshaft Position Sensor Circuit MalfunctionLearn More Fixes
System Too Lean (Bank 1)Learn More Fixes
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)Learn More Fixes
Evaporative Emission Control System MalfunctionLearn More Fixes
Evaporative Emissions System Small Leak DetectedLearn More Fixes
Shift Solenoid A MalfunctionLearn More
Camshaft Position Sensor B Circuit Intermittent (Bank 2)Learn More
Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 1 Sensor 1Learn More
Throttle/Pedal Position Sensor/Switch A Circuit Low InputLearn More
Engine Is Cold Too LongLearn More
Crankshaft Position Camshaft Position Correlation Bank 1 Sensor ALearn More Fixes
Camshaft Position Sensor Circuit IntermittentLearn More
Evaporative Emission Control System Incorrect Purge flowLearn More Fixes
Camshaft Position Sensor B Circuit Intermittent (Bank 2)Learn More
Gear 1 Incorrect RatioLearn More
Gear 2 Incorrect RatioLearn More
Catalyst System Efficiency Below Threshold (Bank 2)Learn More Fixes
Injector Circuit Malfunction - Cylinder 1Learn More
Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 2 Sensor 2Learn More
O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)Learn More Fixes
System Gross Leak Evaporative EmissionLearn More Fixes
Engine Oil Pressure Control Circuit Stuck OffLearn More
Transmission Range Sensor Circuit Range/PerformanceLearn More
Torque Converter Clutch Circuit MalfunctionLearn More
Ignition/Distributor Engine Speed Input Circuit MalfunctionLearn More
Crankshaft Position Sensor A Circuit IntermittentLearn More
Upstream Heated O2 Sensors SwappedLearn More
Governor Pressure Sensor Offset Improper VoltageLearn More
Speed Fuel Pump Positive Feed FaultLearn More
Intermittent Loss of CMP or CKPLearn More
Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)Learn More Fixes
Engine Oil Pressure Sensor/Switch Circuit MalfunctionLearn More
Catalyst System Efficiency Below Threshold (Bank 1)Learn More Fixes
Cylinder 4 Misfire DetectedLearn More Fixes
Evaporative Emission Control System Leak DetectedLearn More Fixes
Cylinder 5 Misfire DetectedLearn More Fixes
Mirror Passenger Drive Circuit FailureLearn More
Transmission Control System MalfunctionLearn More Fixes
Transmission Control System ElectricalLearn More
Manifold Absolute Pressure/Barometric Pressure Circuit High InputLearn More
Cylinder 3 Misfire DetectedLearn More Fixes
Cylinder 1 Misfire DetectedLearn More Fixes
Random/Multiple Cylinder Misfire DetectedLearn More Fixes
Serial Communication Link MalfunctionLearn More
Incorrect Immobilizer KeyLearn More
Idle Control System RPM higher Than ExpectedLearn More Fixes
Leak Detection Pump Switch or Mechanical FaultLearn More
Downstream Heated O2 Sensors SwappedLearn More
Rad Fan Control Relay CircuitLearn More
Skim Invalid KeyLearn 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 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 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 2 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
Evaporative Emission Control System Vent Control Circuit MalfunctionLearn More Fixes
- Manufacturer: Jeep
About the Wagoneer (incl. Grand)
The Wagoneer has had quite a confusing history since its release. The nameplate first emerged in 1963 as its first generation.
It remained on the market until its discontinuation in 1991. It was then reused with the release of the Grand Wagoneer in 1993 for only a single year, essentially representing the third generation of the model.
The model was retired thereafter until its reintroduction for the modern versions of both the Wagoneer and Grand Wagoneer in 2022.
Competition for the latest model has included the likes of the Mercedes-Benz GLS, Lincoln Navigator, and Cadillac Escalade.
One of the most common issues that the latest version has faced is P0123. This code indicates that the throttle pedal position sensor is suffering from a high input voltage.
This code is typically the result of an electrical issue in the TPS sensor circuit. This can include open or short circuits. It is also possible that the TPS sensor is faulty and needs to be replaced.
Another position sensor fault code that is fairly common is P0340. This code indicates that the camshaft position sensor is malfunctioning. This code should never be ignored as it can hide some serious camshaft timing issues.
Similar to the previous code, this can typically be caused by a faulty camshaft position sensor or electrical faults in its circuit.
Fault code P0171 is another problem that owners have had to deal with. This code indicates that the first bank of the engine is running too lean.
This code is very often caused by a leak in the intake manifold or a vacuum leak. However, it can be very frustrating to pinpoint the cause of this general code.