Engine lite on two codes p0440 p0522 what are

What the P0522 code means. The oil pressure sensor sends a message to the PCM (Powertrain Control Module), which gets transmitted in the form of a voltage reading. A vehicle will store P0522 when that message tells the PCM that the sensor is indicating too low of an oil pressure value.

P0522 OBD-II Trouble Code: Engine Oil Pressure Sensor ...

What Does the P0685 Code Mean? The diagnostic trouble code (DTC) P0685 stands for "ECM/PCM Power Relay Control Circuit Open." The powertrain relay typically stays in the open position, and battery voltage constantly goes to the relay.Feb 28, 2022

P0685 Code: ECM / PCM Power Relay Control Circuit Open

https://www.carparts.com > blog > p0685-code-ecm-pcm-...

Chrysler PT Cruiser P0685: Meaning, Causes, + Diagnosis

https://www.700r4transmissionhq.com > p0685-chrysle...
Oct 15, 2021 - P0685 is a somewhat rare OBDII trouble code. It's a general code, so it has the same meaning for the Chrysler PT Cruiser as any other ...

Code P0685 Chrysler: Auto Shutdown Relay Control Circuit ...

https://www.autocodes.com > p0685_chrysler
'Code P0685 Chrysler Possible Causes · Faulty Auto Shutdown (ASD) relay · Auto Shutdown (ASD) relay harness is open or shorted · Auto Shutdown (ASD) relay circuit ...

thje po420 need to monitor o2 sensors to verify if you have a bad sensor or bad catalitic converter
the po522 oil presure sending unit

P0522 code means the sensor is indicating too low of an oil pressure value due to faulty sensor, low oil, or sensor circuit

P0440 OBD II Trouble Code

The car probably will not pass emissions tests with the engine light on.

P0330 Knock Sensor #2-Circuit Malfunction (Bank #2)P0440 Evaporative Emission Control System Malfunction.http://www.autozone.com/autozone/parts/Duralast-Knock-Sensor/2000-Buick-Century/_/N-je30qZ93xni?itemIdentifier=136530_0_0_

Here's a link to PT Cuiser

Codeshttp://www.ptcruiserlinks.com/forum/general-turbo-discussions/14334-error-code-list.html

Hi Michael: here you have two diagrams...






DTC P0440 code indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
A code P0440 could mean one or more of the following has happened:

• The gas cap is not installed or working properly
• The purge solenoid has failed
• The canister is plugged and not working properly

Additional details could find in this links Fault Codes on Cars & Trucks or other diagrams in Cars & Trucks Vacuum Diagram.

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there appears to be a problem with your crank position sensor and your oil pressure switch.
http://www.obd-codes.com/p0300
http://www.obd-codes.com/p0335

P0522 Engine Oil Pressure Sensor/Switch Circuit Low Voltage

http://www.jeepforum.com/forum/f28/p0522-engine-oil-pressure-sensor-switch-circuit-low-voltage-618006/

The crank position sensor or its connection is probably at fault. The engine needs the signal that the crank postion sensor provides to inject fuel and supply spark at the correct time.

P0232....Fuel Pump Secondary Circuit High

P0230....Fuel Pump Primary Circuit

P0215....Engine Shutoff Solenoid

P0122....Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0522....Engine Oil Pressure Sensor/Switch Low Voltage