ECM-940A on Volvo
Engine Control Module Fault (Volvo)
ECM-940A on Volvo vehicles indicates engine control module fault (volvo). Au7o has documented this code across 1 Volvo model — most commonly on V90 Cross Country. Volvo-specific engine control module diagnostic code. Indicates an ECM-detected performance issue. Typical repair costs on Volvo range from $200 to $800, depending on the specific model and root cause.
Common Causes of ECM-940A
- •ECM internal fault
- •Sensor input error
- •Software update needed
- •Wiring issue
- •Environmental condition affecting sensor
ECM-940A on Volvo by Model
Volvo V90 Cross Country(1 issue)
- T6 Turbocharger Coolant Line Crack and Leak2017-2022
The T6 twin-charged (supercharged + turbocharged) 2.0L 4-cylinder develops cracks in the turbocharger coolant supply and return lines. The plastic quick-connect fittings and the rigid coolant lines become brittle from heat cycling in the confined engine bay. A cracked line causes coolant loss that can lead to turbo damage from overheating. The leak is often small and difficult to locate visually because it evaporates on the hot turbo housing.
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View ECM-940A across all makes →Frequently Asked Questions
What does ECM-940A mean on Volvo?▼
ECM-940A stands for "Engine Control Module Fault (Volvo)." Volvo-specific engine control module diagnostic code. Indicates an ECM-detected performance issue. On Volvo specifically, this code is documented across 1 model.
What causes ECM-940A on Volvo vehicles?▼
Common causes on Volvo: ECM internal fault, Sensor input error, Software update needed, Wiring issue, Environmental condition affecting sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix ECM-940A on a Volvo?▼
Repair costs on Volvo range from $200 to $800, depending on the specific model and root cause.
Which Volvo models have ECM-940A documented?▼
Au7o has documented ECM-940A on 1 Volvo model: V90 Cross Country.