P0405 on Chrysler: How to Diagnose & Fix
Exhaust Gas Recirculation Sensor 'A' Circuit Low
1 Chrysler model · 1 documented issue · $150-$400 repair
P0405 on Chrysler by model: symptoms, diagnosis and fix
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.
Common Symptoms
- Rough idle or stalling at idle
- Check engine light with EGR flow codes
- Hesitation during acceleration
- Failed emissions test for high NOx
- Engine surging or hunting at idle
How to Fix
Remove the EGR valve and clean it with carburetor cleaner and a wire brush. Clean the EGR passages in the intake manifold with a long bristle brush. If the valve diaphragm is torn or the pintle is worn, replace the EGR valve (Standard Motor Products EGV880 or equivalent). Also clean the EGR tube connecting the exhaust manifold to the valve. Budget $150-$400 for cleaning and/or replacement.
Sources for this issue (1)
P0405 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0405 mean on a Chrysler?
P0405 stands for "Exhaust Gas Recirculation Sensor 'A' Circuit Low." P0405 is a generic OBD-II code meaning the engine computer detected an abnormally low voltage signal from the Exhaust Gas Recirculation (EGR) sensor 'A' circuit. This sensor reports the EGR valve's position or flow, which the computer uses to control exhaust gas recirculation for lowering emissions and combustion temperatures. A low signal indicates the reading is below the expected range, often due to a wiring or sensor fault. It mainly affects emissions and may cause light drivability issues but is not an immediate safety concern. On Chrysler it is documented across 1 model: PT Cruiser.
What are the most common causes of P0405?
The most common causes of P0405 are: Faulty EGR position sensor (or DPFE sensor), Open, shorted, or corroded EGR sensor wiring/connector, EGR valve stuck or carbon-clogged, Loss of reference voltage or ground to the sensor, Poor connector contact / pin corrosion, Damaged EGR valve assembly, PCM fault (rare). The specific cause varies by vehicle.
How much does it cost to fix P0405 on a Chrysler?
Published repair estimates on Chrysler range from $150 to $400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0405 on a different make?
View P0405 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.