You can find common Jeep Grand Cherokee 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 Jeep Grand Cherokee Codes Jeep Grand Cherokee Recall Notices Common Jeep Grand Cherokee Codes
Search Jeep Grand Cherokee Codes
Do you know the fault code already? Enter it in the box below and hit "Search Codes".
Jeep Grand Cherokee 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 Grand Cherokee has any recall notices on our sister site AutoRecalls.co, sorted by model year.View Jeep Grand Cherokee Recalls »
Common Grand Cherokee Fault Codes
These are the most common Grand Cherokee fault codes that people are searching for.
Throttle/Pedal Position Sensor/Switch A Circuit High InputLearn More
Throttle/Pedal Position Sensor/Switch A Circuit Low InputLearn More
Idle Control System MalfunctionLearn More
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)Learn More
Cold Start Rough IdleLearn More
Manifold Absolute Pressure/Barometric Pressure Circuit High InputLearn More
Cooling Fan 1 Control Circuit MalfunctionLearn More
Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 1 Sensor 2Learn More
Shift Solenoid A MalfunctionLearn More
Engine Coolant Temperature Circuit High InputLearn More
Vehicle Speed Sensor Range/PerformanceLearn More
Injector Circuit Malfunction - Cylinder 1Learn More
Engine Oil Pressure Control Circuit Stuck OffLearn More
Engine Oil Pressure Sensor/Switch Circuit MalfunctionLearn More
Transmission Fluid Temperature Sensor Circuit MalfunctionLearn More
Transmission Over Temperature ConditionLearn More
Incorrect Immobilizer KeyLearn More
Incorrect Gear RatioLearn More
Ignition/Distributor Engine Speed Input Circuit MalfunctionLearn More
O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)Learn More
TCM Power Relay Sense CircuitLearn More
ECM/PCM Power Relay Sense CircuitLearn More
Transmission Fluid Pressure LowLearn More
Four Wheel Drive (4WD) Switch Circuit LowLearn More
Four Wheel Drive (4WD) Switch Circuit Range/PerformanceLearn More
Crankshaft Position Sensor A Circuit IntermittentLearn More
Output Speed Sensor Circuit MalfunctionLearn More
Ignition Coil A Primary/Secondary Circuit MalfunctionLearn More
Leak Detection Pump Switch or Mechanical FaultLearn More
Intermittent Loss of CMP or CKPLearn More
Rad Fan Control Relay CircuitLearn More
Engine Is Cold Too LongLearn More
Governor Pressure Sensor Voltage Too HighLearn More
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 1 Sensor 1Learn More
Skim Invalid KeyLearn More
Variable Intake Solenoid #1 Circuit MalfunctionLearn More
Engine Coolant Temperature Circuit Low InputLearn More
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)Learn More
4X4 Switch Out of Self Test RangeLearn More
Trans 12 Volt Supply Relay Control CircuitLearn More
Cooling System PerformanceLearn More
EEPROM MalfunctionLearn More
Governor Pressure Sensor Offset Improper VoltageLearn More
SCP (J1850) Invalid or Missing Data for Primary IdLearn More
Torque Converter Clutch Circuit Performance or Stuck OffLearn More
Downstream Heated O2 Sensors SwappedLearn More
Governor Pressure Not Equal To Target At 15–20 PSILearn More
Input/Turbine Speed Sensor Circuit No SignalLearn More
Transmission Fluid Pressure Sensor/Switch C Circuit Range/PerformanceLearn More
Mirror Passenger Drive Circuit FailureLearn More
Transmission Control System ElectricalLearn More
Camshaft Position Sensor Circuit IntermittentLearn More
- Manufacturer: Jeep
About the Grand Cherokee
The Jeep Grand Cherokee first made its debut back in 1993. Since then, there have been a total of five generations to hit the markets. The latest of these was unveiled for 2022.
In terms of sizing, it is a larger version of the Jeep Cherokee. This is where the ‘Grand’ aspect of its name comes in. It also features a number of additional extras than the base model.
The most common issue that Grand Cherokee owners have encountered is P0456, which indicates that there is a leak in the EVAP system.
Some of the models feature a capless gas tank, meaning that the typical loose gas cap is not the cause. However, it is still important to ensure that the capless system is sealing properly when closing. Other causes can include leaks in the system from faulty components or loose connections.
Fault code P0135 is another code that comes up fairly often for the SUV. This code indicates that the oxygen sensor upstream of the catalytic converter is malfunctioning.
Of course, it is very likely that the oxygen sensor itself has failed and needs replacing. Other issues can include electrical faults within its circuit. Exhaust leaks may also cause this problem.
Another problem that the Grand Cherokee is known for is P0123. This code indicates that a high voltage has been detected from the throttle position sensor.
Owners have found that replacing the sensor is one of the best ways to fix this issue. Additional work like cleaning the throttle body can also be a potential solution that owners have used.