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DTC - Diagnostic Trouble Codes information

P0688

Powertrain Codes

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.

Description

The Front Control Module (FCM) has detected the supply voltage below an acceptable value