Jeep Cherokee Common Problems & Reliability Guide
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Overview
The fifth-generation Jeep Cherokee (KL) is a compact crossover SUV that replaced the Liberty, featuring a sophisticated 9-speed automatic transmission, available all-wheel drive systems, and a range of efficient four-cylinder and V6 engines. Known for its off-road capability and urban versatility, the Cherokee has faced recurring issues with transmission performance, electrical glitches, and engine stalling that owners should monitor.
Quick Summary
Most Common OBD2 Codes
Most Serious Issues
- ZF 9-Speed Automatic Transmission Issues($500-$6000)
- Engine Stalling and Loss of Power($150-$1500)
- MultiAir Valve System Failures (2.4L)($1200-$3500)
5 recalls documented across all generations
By Generation
Available Engines
Common OBD2 Codes
| Code | Frequency | Notes |
|---|---|---|
| P0456 | Occasional | EVAP System Small Leak Detected. Common causes: Loose or damaged gas cap, cracked EVAP hoses, faulty purge valve, leaking fuel tank seal |
| P0128 | Common | Coolant Thermostat Temperature Below Regulating Temperature. Common causes: Stuck-open thermostat, faulty coolant temperature sensor, low coolant level, thermostat housing leak |
| P0172 | Common | Fuel System Too Rich Bank 1. Common causes: Dirty air filter, faulty oxygen sensor, leaking fuel injectors, faulty mass airflow sensor, excessive fuel pressure |
| P0300 | Very Common | Random/Multiple Cylinder Misfire Detected. Common causes: Worn spark plugs, faulty ignition coils, vacuum leaks, low fuel pressure, carbon buildup on valves (MultiAir engines) |
| P0171 | Common | System Too Lean Bank 1. Common causes: Vacuum leaks, faulty mass airflow sensor, faulty oxygen sensor, clogged fuel filter, low fuel pressure |
| P0720 | Very Common | Output Speed Sensor Circuit Malfunction. Common causes: Failed output speed sensor, damaged wiring to sensor, internal transmission issues, faulty TCM |
| P0700 | Very Common | Transmission Control System Malfunction. Common causes: Failed transmission control module, internal transmission issues (9-speed), faulty shift solenoids, low transmission fluid |
| P0440 | Occasional | Evaporative Emission Control System Malfunction. Common causes: Faulty purge valve, damaged EVAP canister, cracked or disconnected vacuum lines, faulty leak detection pump |
| P0520 | Common | Engine Oil Pressure Sensor/Switch Circuit Malfunction. Common causes: Faulty oil pressure sensor, damaged wiring to sensor, low oil level, failing oil pump |
| U0100 | Very Common | Lost Communication with ECM/PCM. Common causes: Faulty PCM, damaged CAN bus wiring, corroded connectors, poor ground connection, software glitch requiring reflash |
| P0335 | Very Common | Crankshaft Position Sensor A Circuit Malfunction. Common causes: Failed crankshaft position sensor, damaged sensor wiring, debris on sensor, faulty reluctor ring |
Known Problems
The 9HP48/9HP50 transmission exhibits harsh shifts, delayed engagement, shuddering during acceleration, stuck gears, and limp mode activation. Multiple software updates have been released but haven't fully resolved issues for all vehicles.
Shop parts for this repairMultiple reports of unexpected stalling while driving, loss of power, and rough idle, particularly on 2.4L Tigershark engines. Often related to electronic throttle body carbon buildup, faulty sensors, or PCM software issues.
Shop parts for this repairRandom warning lights illuminating without cause, unresponsive touchscreen (Uconnect), electronic stability control warnings, blind spot monitor failures, and electrical gremlins requiring module resets or replacements.
Shop parts for this repairThe 2.4L Tigershark engine uses an electrohydraulic MultiAir valve actuation system that can fail, causing rough idle, misfires, oil consumption, and check engine lights. Requires replacement of expensive MultiAir components.
Shop parts for this repairWater intrusion through weatherstripping, clogged sunroof drains, liftgate seal failures, and poorly sealed body seams. Can lead to mold, electrical issues, and carpet damage.
Shop parts for this repairThe rear drive unit (RDU) can overheat or fail, causing 4WD system warnings, loss of all-wheel drive function, and check engine lights. More common in vehicles used for frequent off-roading or towing.
Shop parts for this repairPremature radiator failures, coolant leaks from plastic end tanks, thermostat housing leaks, and water pump failures causing overheating and coolant loss.
Shop parts for this repairPremature brake pad and rotor wear, brake noise (squealing or grinding), soft brake pedal, and occasional ABS module failures requiring replacement.
Shop parts for this repairRecalls
The shifter cable bushing can detach from the transmission, preventing the transmission from going into the intended gear or allowing unintended vehicle rollaway even when the shifter is in Park.
The power liftgate struts may fail, causing the liftgate to fall unexpectedly and potentially causing injury or property damage.
The fuel pump module may fail due to an impeller issue, causing the engine to stall without warning, increasing the risk of a crash.
The airbag control module software may incorrectly classify an adult passenger as a child, disabling the front passenger airbag when it should be enabled, increasing injury risk in a crash.
The rearview camera image may not display immediately when shifting into Reverse, delaying the driver's view of the area behind the vehicle and increasing the risk of a crash.