P0405 on Chrysler
Exhaust Gas Recirculation Sensor 'A' Circuit Low
P0405 on Chrysler vehicles indicates exhaust gas recirculation sensor 'a' circuit low. Au7o has documented this code across 1 Chrysler model — most commonly on PT Cruiser. 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. Typical repair costs on Chrysler range from $150 to $400, depending on the specific model and root cause.
Common Causes of P0405
- •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)
P0405 on Chrysler by Model
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.
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View P0405 across all makes →Frequently Asked Questions
What does P0405 mean on 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 specifically, this code is documented across 1 model.
What causes P0405 on Chrysler vehicles?▼
Common causes on Chrysler: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0405 on a Chrysler?▼
Repair costs on Chrysler range from $150 to $400, depending on the specific model and root cause.
Which Chrysler models have P0405 documented?▼
Au7o has documented P0405 on 1 Chrysler model: PT Cruiser.