P0403 on Chrysler
Exhaust Gas Recirculation Circuit Malfunction
P0403 on Chrysler vehicles indicates exhaust gas recirculation circuit malfunction. Au7o has documented this code across 3 Chrysler models — most commonly on Crossfire, PT Cruiser, Sebring. This emissions code indicates a malfunction in the exhaust gas recirculation (EGR) control circuit. The EGR system routes a small amount of exhaust back into the intake to lower combustion temperatures and reduce nitrogen-oxide emissions, and the computer commands the EGR valve open and closed through this circuit. The code sets when the electrical control signal to the EGR valve or its solenoid is out of the expected range — for example, an open, short, or a commanded change that doesn't produce the right feedback. It generally points to an electrical or wiring problem in the EGR control circuit, or the EGR valve/solenoid itself, rather than carbon clogging alone. Typical repair costs on Chrysler range from $150 to $2,000, depending on the specific model and root cause.
Common Causes of P0403
- •Faulty EGR valve or EGR solenoid
- •Damaged wiring or connector in the EGR control circuit
- •Open or short in the EGR control wiring
- •Corroded or loose EGR connector
- •Blown fuse or lost power supply to the EGR circuit
- •Carbon buildup binding the EGR valve
- •Faulty engine control module or driver circuit
P0403 on Chrysler by Model
Chrysler Crossfire(1 issue)
- EGR Solenoid and Catalytic Converter Failure2004-2008
The Crossfire (built on Mercedes SLK R170 platform, sharing 80% of components) commonly experiences EGR solenoid failures and premature catalytic converter failure. The EGR solenoid is the most common cause of check engine lights. Catalytic converter rattles and fails, especially noticeable when accelerating from cold.
Chrysler PT Cruiser(1 issue)
- EGR Valve Failure and Carbon Buildup2001-2010
The EGR (Exhaust Gas Recirculation) valve on the 2.4L engine clogs with carbon deposits and sticks open or closed. When stuck open, it causes rough idle, stalling, and hesitation. When stuck closed, it increases NOx emissions and may trigger a check engine light. The EGR passages in the intake manifold also clog with carbon, reducing effectiveness even with a functioning valve. The turbo model is especially prone due to higher exhaust temperatures.
Chrysler Sebring(1 issue)
- Alternator and PCM-Integrated Voltage Regulator Failure2001-2010
The Sebring's voltage regulator is integrated into the PCM (Powertrain Control Module), not the alternator. This unusual design means a voltage regulator failure requires PCM diagnosis/replacement rather than simple alternator work. Alternators also fail prematurely around 70,000 miles. Ground corrosion and battery terminal strip issues compound the problem.
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View P0403 across all makes →Frequently Asked Questions
What does P0403 mean on Chrysler?▼
P0403 stands for "Exhaust Gas Recirculation Circuit Malfunction." This emissions code indicates a malfunction in the exhaust gas recirculation (EGR) control circuit. The EGR system routes a small amount of exhaust back into the intake to lower combustion temperatures and reduce nitrogen-oxide emissions, and the computer commands the EGR valve open and closed through this circuit. The code sets when the electrical control signal to the EGR valve or its solenoid is out of the expected range — for example, an open, short, or a commanded change that doesn't produce the right feedback. It generally points to an electrical or wiring problem in the EGR control circuit, or the EGR valve/solenoid itself, rather than carbon clogging alone. On Chrysler specifically, this code is documented across 3 models.
What causes P0403 on Chrysler vehicles?▼
Common causes on Chrysler: Faulty EGR valve or EGR solenoid, Damaged wiring or connector in the EGR control circuit, Open or short in the EGR control wiring, Corroded or loose EGR connector, Blown fuse or lost power supply to the EGR circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0403 on a Chrysler?▼
Repair costs on Chrysler range from $150 to $2,000, depending on the specific model and root cause.
Which Chrysler models have P0403 documented?▼
Au7o has documented P0403 on 3 Chrysler models: Crossfire, PT Cruiser, Sebring.