P0685 — OBD-II trouble code

A generic powertrain OBD-II trouble code. Below are the vehicles and failure patterns where owners report it, drawn from NHTSA complaints.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0685 across 8 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0685 8 patterns

2020 Ford F-250

powertrain — Transmission hard shifting, jerking, and rough engagement

2014 Mazda CX-5

electrical — Battery drains due to continuous parasitic electrical load

2011 Ford Escape

engine — Electronic Throttle Body (ETB) Failure - Power Loss and Stalling

2010 Ford Escape

cruise control — Electronic Throttle Body Malfunction - Loss of Acceleration

2010 Mercury Milan

cruise control — Electronic Throttle Body Loss of Power/Unresponsive Accelerator

2008 Ford Escape

brakes — Hydraulic Control Unit (HCU) failure

2007 Honda Accord

electrical — PCM/ECM Power Relay Failure Causing Stalling

2006 Saturn Vue

electrical — All Warning Lights Illuminating/Electrical Malfunction

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →