P0520 Quick Answer · Oil Pressure Sensor/Switch Circuit The P0520 code on a Dodge means the PCM sees something wrong with the oil pressure sensor’s electrical circuit — the signal is out of range, not …
P0562 Quick Answer · System Voltage Low The P0562 code on a Dodge means the PCM watched the electrical system’s voltage sag below its low limit while the engine was running — the network of …
CAT Component Guide · Catalytic Converters on Dodge Vehicles The catalytic converter is the most expensive routine emissions part on your Dodge — a precious-metal honeycomb that burns off what the engine couldn’t. It rarely …
P0440 P0441 P0496 Quick Answer · EVAP Flow Faults These three codes mean fuel vapor is moving wrong inside your Dodge’s EVAP system: P0441 says vapor didn’t flow when commanded, P0496 says it flowed when …
EVAP Component Guide · EVAP Purge Valve (Purge Solenoid) The purge valve on a Dodge is the small electric solenoid that meters stored fuel vapor from the charcoal canister into the engine to be burned. …
O2 Component Guide · Oxygen Sensors on Dodge Vehicles Your Dodge’s oxygen sensors are the referees of the fuel system: the upstream sensors tell the PCM how to mix fuel in real time, and the …
OBD2 Buying Guide · Scan Tools That Actually Fit a Dodge The best OBD2 scanner for a Dodge is one that reads every module, not just the engine. Chrysler-family vehicles store their most expensive secrets …
P0455 P0457 Quick Answer · EVAP Large Leak / Loose Fuel Cap The P0455 code on a Dodge means the EVAP system found a large leak — it tried to seal the fuel-vapor system and …
P0128 Quick Answer · Coolant Temp Below Thermostat Regulating Temperature The P0128 code on a Dodge means the engine isn’t reaching full operating temperature fast enough — the PCM expected hot coolant by a certain …
U0100 Quick Answer · Lost Communication with ECM/PCM The U0100 code on a Dodge means another computer on the vehicle’s network lost contact with the engine computer (PCM) over the CAN bus — the data …