Chrysler 300 Common Problems & Reliability Guide
Get Your FREE AI Diagnostic Report
Enter your year for a personalized diagnosis for your Chrysler 300
Overview
The Chrysler 300 is a full-size luxury sedan known for its bold styling, rear-wheel-drive platform, and available HEMI V8 power. Built on the Mercedes-Benz-derived LX platform, the 300 has been popular for its comfortable ride and upscale interior. However, owners have reported recurring issues with electrical systems, transmission problems, and engine components across multiple generations.
Quick Summary
Most Serious Issues
- 2.7L V6 Engine Oil Sludge and Failure($4000-$7000)
- TIPM (Totally Integrated Power Module) Failure($800-$1500)
- Water Pump Failure (2.7L and 3.5L V6)($1200-$2000)
9 recalls documented across all generations
By Generation
Available Engines
Common OBD2 Codes
| Code | Frequency | Notes |
|---|---|---|
| P0128 | Very Common | Thermostat stuck open, especially common on 2.7L and 3.5L V6 engines. Often requires thermostat housing replacement. |
| P0300 | Very Common | Random misfires often caused by failing ignition coils or spark plugs. HEMI engines particularly susceptible. |
| P0456 | Very Common | Small EVAP leak, typically caused by loose or damaged gas cap, or failing purge valve. |
| P0171 | Common | System too lean, often from vacuum leaks in intake manifold gaskets or brake booster hose on V6 models. |
| P0442 | Common | Medium EVAP leak, frequently caused by cracked EVAP lines or faulty canister vent valve. |
| P0520 | Common | Oil pressure sensor circuit malfunction. Sensor failure is common, actual oil pressure usually normal. |
| P0700 | Common | Transmission control system malfunction. Indicates stored transmission codes, requires further diagnosis. |
| P0301 | Common | Cylinder 1 misfire, typically ignition coil or spark plug failure on HEMI engines. |
| U0101 | Occasional | Lost communication with TCM, often from wiring corrosion or loose connectors near transmission. |
| P0420 | Occasional | Catalyst efficiency below threshold. Catalytic converter degradation common after 100k+ miles. |
Known Problems
The 2.7L V6 engine is notorious for oil sludge buildup leading to catastrophic engine failure. The water pump is internal and runs off the timing chain; when it fails, coolant mixes with oil. Poor oil change intervals exacerbate the problem. Many owners have experienced complete engine seizure.
Typical mileage: 80,000-120,000 miles
Shop parts for this repairThe TIPM controls electrical functions throughout the vehicle. Failures cause erratic behavior including stalling, no-start conditions, wipers activating randomly, gauges malfunctioning, and fuel pump failure. This is one of the most reported issues across early 300s.
Typical mileage: 60,000-150,000 miles
Shop parts for this repairThe Mercedes NAG1 (W5A580) transmission experiences solenoid pack failures causing harsh shifting, slipping, limp mode, or failure to engage gears. The solenoid pack is internal and requires transmission pan removal.
Typical mileage: 70,000-130,000 miles
Shop parts for this repairThe internal water pump on V6 engines can fail, causing coolant leaks into the engine oil and potential overheating. This is a serious issue requiring immediate attention to prevent engine damage.
Typical mileage: 60,000-100,000 miles
Shop parts for this repairThe 5.7L and 6.1L HEMI engines frequently experience ignition coil failures leading to misfires. Multiple coils often fail over time. Symptoms include rough idle, hesitation, and check engine light.
Typical mileage: 40,000-80,000 miles
Shop parts for this repairFrequent EVAP system leaks from cracked purge valves, vent valves, and deteriorating rubber hoses. The purge valve solenoid is a common failure point. Can cause fuel smell and check engine lights.
Typical mileage: 50,000-120,000 miles
Shop parts for this repairLower control arm bushings wear prematurely, causing clunking noises over bumps, wandering steering, and uneven tire wear. This is a common suspension issue requiring replacement of entire control arms.
Typical mileage: 50,000-90,000 miles
Shop parts for this repairRecalls
Front seat belt pretensioners may not deploy properly in a crash, increasing injury risk.
Fuel tank straps may corrode in salt belt states, potentially causing fuel tank to drop.
Front airbags may not deploy in certain collisions due to occupant classification system malfunction.
Steering column may lock while driving due to faulty ignition lock mechanism.
Available Engines
Common OBD2 Codes
| Code | Frequency | Notes |
|---|---|---|
| P0456 | Very Common | Small EVAP leak, often from gas cap or EVAP purge valve failure. Very common across all years. |
| P0300 | Very Common | Random misfires on 3.6L Pentastar V6, often caused by failing rocker arms or worn valve springs. |
| P0128 | Very Common | Thermostat issues on 3.6L V6. Thermostat housing often leaks coolant and requires replacement. |
| P0520 | Common | Oil pressure sensor failure, particularly on HEMI engines. Sensor replacement usually resolves issue. |
| P0158 | Common | Bank 2 Sensor 2 oxygen sensor circuit high. O2 sensor failures common after 80k+ miles. |
| P0700 | Common | Transmission control system fault on 8-speed ZF transmission. Requires further diagnosis for specific internal codes. |
| U0100 | Common | Lost communication with ECM/PCM. Often caused by TIPM issues, battery problems, or wiring corrosion. |
| P0301 | Common | Cylinder 1 misfire on V6 and V8 engines. Common causes include rocker arm failure (V6) or ignition coils (V8). |
| P0171 | Occasional | System too lean Bank 1. Can be caused by vacuum leaks, MAF sensor issues, or intake manifold gasket leaks. |
| P0442 | Occasional | Medium EVAP leak from cracked vent valve or EVAP canister damage. |
Known Problems
The left cylinder head (cylinders 1-3) commonly experiences rocker arm failure and valve spring breakage on 2011-2013 models. This causes severe misfires, ticking noises, and potential catastrophic engine damage. Chrysler issued an extended warranty for some VINs but many owners still face expensive repairs.
Typical mileage: 30,000-90,000 miles
Shop parts for this repairThe TIPM remains a problem in 2011-2014 models causing fuel pump relay failures, stalling, no-start conditions, and erratic electrical behavior. Chrysler redesigned the TIPM in later years but early second-gen models still suffer.
Typical mileage: 50,000-120,000 miles
Shop parts for this repairThe ZF 8HP transmission experiences shuddering during acceleration, harsh downshifts, and delayed engagement. Software updates help in some cases, but torque converter and valve body replacements are sometimes needed.
Typical mileage: 40,000-100,000 miles
Shop parts for this repairThe 3.6L V6 commonly develops coolant leaks from the thermostat housing, water outlet, and water pump. The plastic components become brittle over time and crack, leading to overheating if not addressed.
Typical mileage: 60,000-120,000 miles
Shop parts for this repairThe 5.7L HEMI's MDS system (cylinder deactivation) can experience lifter failures causing ticking/knocking noises, misfires, and reduced power. Some owners disable MDS to prevent failures.
Typical mileage: 50,000-150,000 miles
Shop parts for this repairThe electric power steering system can fail suddenly, causing loss of power assist. Warning messages appear on dash. Steering rack or control module replacement required.
Typical mileage: 70,000-130,000 miles
Shop parts for this repairAir conditioning compressor failures are common, often due to clutch bearing seizure or internal compressor damage. Can scatter metal debris through the A/C system requiring full system flush.
Typical mileage: 60,000-110,000 miles
Shop parts for this repairThe UConnect 8.4-inch touchscreen frequently freezes, reboots randomly, or becomes unresponsive. GPS and backup camera may stop working. Software updates sometimes help but head unit replacement often needed.
Typical mileage: Any mileage
Shop parts for this repairRecalls
Headlamp modules may overheat and short circuit, potentially causing fire.
Alternator wire harness connector may overheat and melt, increasing fire risk.
Transmission shift cable may fracture, preventing proper gear selection or causing rollaway.
Side curtain airbags may not deploy properly in a crash due to inflator issue.
Rearview camera may not display image when in reverse, increasing crash risk.