How do you tell if the auto shutdown relay is bad

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 ...

P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Possible causes - Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty (ECM
Possible symptoms:
Engine Light ON (or Service Engine Soon Warning Light) P0685 Dodge Description: Short or open in Auto Shutdown (ASD) relay circuit, this relay is under the hood in the relay center.

P0685 CHRYSLER - Auto Shutdown Relay Control Circuit Failure

Short or open in Auto Shutdown (ASD) relay circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

P0688 CHRYSLER - Auto Shutdown Relay Control Circuit Low

The Front Control Module (FCM) has detected the supply voltage below an acceptable value
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

Should be under the hood. This seems to be pretty common so your local dealer should know exactly what going on if you tell them the story.

P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0685 DODGE Description Short or open in Auto Shutdown (ASD) relay circuit

P0688 DODGE - Auto Shutdown Relay Control Circuit Low
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0688 DODGE Description The Front Control Module (FCM) has detected the supply voltage below an acceptable value

Most likely auto shutdown relay is bad. Very common to go bad.

It is the Auto Shutdown Relay located in the power distribution center under the hood, the black box with all the fuses and relays. Replace the relay, and check all the 30amp and 50 amp fuses. You might try removing the relay and reinstalling it first, to see if it will reset.

There is no switch. The relay gets a signal from the computer. If there is no signal from the crank position sensor the computer will not close the relay. If it runs with the relay bypassed, chances are good that the relay itself is bad.

Mostly likely it is the Relay that is beginning to go bad. One way to test this is to use the Spare Relay of the same Type (size and shape). OR switch out a similiar Relay of the same type (size and shape) THAT IS A NON-ENGINE OPERATION RELAY. Check again the operations. If the "new" Relay in the Auto Shutdown Relay no longer clicks, then it most likely was the Relay that should be replaced. However, IF you used the "old" Relay in another function, put your finger on this Relay while the function is "On" and determine if it is now clicking. If it is clicking, then it is definitely the Relay and needs to be replaced.
Let me know if this helped, or if you have addtional information or questions. Feel free to contact me at FixYa.com!

Auto shutdown relay and fuel pump relay are by the battery under a cover.