P0685 on Dodge
ECM/PCM Power Relay Control Circuit/Open
P0685 on Dodge vehicles indicates ecm/pcm power relay control circuit/open. Au7o has documented this code across 1 Dodge model — most commonly on Journey. An open or general fault in the control circuit for the ECM/PCM main power relay. The module cannot properly control the relay that supplies its own switched power. Typical repair costs on Dodge range from $600 to $1,500, depending on the specific model and root cause.
Common Causes of P0685
- •Faulty ECM/PCM power relay
- •Open in the relay control circuit
- •Corroded/damaged connectors
- •Blown fuse
- •Internal PCM driver fault
P0685 on Dodge by Model
Dodge Journey(1 issue)
- TIPM (Totally Integrated Power Module) Failure Causing Widespread Electrical Faults2009-2013
The under-hood TIPM (a fuse/relay/computer combo) is a known failure point on early Journeys, causing a wide array of erratic electrical behavior. Owners report random horn honking, no-start or hard-start conditions, windows and door locks operating on their own, premature battery drain, and the engine stalling while driving. In severe cases the unit has overheated and caused under-hood fires.
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View P0685 across all makes →Frequently Asked Questions
What does P0685 mean on Dodge?▼
P0685 stands for "ECM/PCM Power Relay Control Circuit/Open." An open or general fault in the control circuit for the ECM/PCM main power relay. The module cannot properly control the relay that supplies its own switched power. On Dodge specifically, this code is documented across 1 model.
What causes P0685 on Dodge vehicles?▼
Common causes on Dodge: Faulty ECM/PCM power relay, Open in the relay control circuit, Corroded/damaged connectors, Blown fuse, Internal PCM driver fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0685 on a Dodge?▼
Repair costs on Dodge range from $600 to $1,500, depending on the specific model and root cause.
Which Dodge models have P0685 documented?▼
Au7o has documented P0685 on 1 Dodge model: Journey.