Jeep grand cherokee codes

Jeep Grand Cherokee Fault Codes

You can find common Jeep Grand Cherokee fault codes on this page that when clicked take you to a detailed description.

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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.

Common Grand Cherokee Fault Codes

These are the most common Grand Cherokee fault codes that people are searching for.

3/10

P0456

Evaporative Emissions System Small Leak Detected

6/10

P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P0123

Throttle/Pedal Position Sensor/Switch A Circuit High Input

P0122

Throttle/Pedal Position Sensor/Switch A Circuit Low Input

7/10

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

7/10

P0171

System Too Lean (Bank 1)

9/10

P0011

Intake Camshaft Position Timing — Over-Advanced (Bank 1)

P0505

Idle Control System Malfunction

P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

6/10

P0174

System Too Lean (Bank 2)

8/10

P0340

Camshaft Position Sensor Circuit Malfunction

P050D

Cold Start Rough Idle

3/10

P0507

Idle Control System RPM higher Than Expected

P0108

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0480

Cooling Fan 1 Control Circuit Malfunction

P0038

Heated Oxygen Sensor (HO2S) Heater Circuit High Voltage Bank 1 Sensor 2

P0750

Shift Solenoid A Malfunction

4/10

P0128

Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

P0118

Engine Coolant Temperature Circuit High Input

8/10

P0113

Intake Air Temperature Circuit High Input

P0501

Vehicle Speed Sensor Range/Performance

P0201

Injector Circuit Malfunction — Cylinder 1

8/10

P0301

Cylinder 1 Misfire Detected

3/10

P0440

Evaporative Emission Control System Malfunction

4/10

P0455

System Gross Leak Evaporative Emission

9/10

P0300

Random/Multiple Cylinder Misfire Detected

P06DD

Engine Oil Pressure Control Circuit Stuck Off

7/10

P0430

Catalyst System Efficiency Below Threshold (Bank 2)

P0520

Engine Oil Pressure Sensor/Switch Circuit Malfunction

8/10

P0305

Cylinder 5 Misfire Detected

P0710

Transmission Fluid Temperature Sensor Circuit Malfunction

P0218

Transmission Over Temperature Condition

P0513

Incorrect Immobilizer Key

P0730

Incorrect Gear Ratio

9/10

P0700

Transmission Control System Malfunction

P0320

Ignition/Distributor Engine Speed Input Circuit Malfunction

6/10

P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

P0152

O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)

P0888

TCM Power Relay Sense Circuit

P0688

ECM/PCM Power Relay Sense Circuit

P0868

Transmission Fluid Pressure Low

P0838

Four Wheel Drive (4WD) Switch Circuit Low

P0837

Four Wheel Drive (4WD) Switch Circuit Range/Performance

P0339

Crankshaft Position Sensor A Circuit Intermittent

P0720

Output Speed Sensor Circuit Malfunction

P0351

Ignition Coil A Primary/Secondary Circuit Malfunction

P1494

Leak Detection Pump Switch or Mechanical Fault

P1391

Intermittent Loss of CMP or CKP

P1491

Rad Fan Control Relay Circuit

P1281

Engine Is Cold Too Long

P1763

Governor Pressure Sensor Voltage Too High

P1130

Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction Bank 1 Sensor 1

P1685

Skim Invalid Key

P1521

Variable Intake Solenoid #1 Circuit Malfunction

P0117

Engine Coolant Temperature Circuit Low Input

4/10

P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

P0161

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

4/10

P0031

Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 1

P1781

4X4 Switch Out of Self Test Range

P1765

Trans 12 Volt Supply Relay Control Circuit

P2181

Cooling System Performance

P1603

EEPROM Malfunction

P1762

Governor Pressure Sensor Offset Improper Voltage

U1001

SCP (J1850) Invalid or Missing Data for Primary Id

P0741

Torque Converter Clutch Circuit Performance or Stuck Off

P1129

Downstream Heated O2 Sensors Swapped

8/10

P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

P1756

Governor Pressure Not Equal To Target At 15–20 PSI

P0717

Input/Turbine Speed Sensor Circuit No Signal

P0871

Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance

8/10

P0304

Cylinder 4 Misfire Detected

3/10

P0442

Evaporative Emission Control System Leak Detected

B2224

Mirror Passenger Drive Circuit Failure

P0702

Transmission Control System Electrical

8/10

P0303

Cylinder 3 Misfire Detected

P0344

Camshaft Position Sensor Circuit Intermittent

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.

As a mid-size luxury SUV, it typically faces competition from the Ford Edge, Toyota 4Runner, and Hyundai Santa Fe Sport.

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.

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