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DTC - Diagnostic Trouble Codes information

P0686

Powertrain Codes

P0686 - BMW - DME Master Relay Activation

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- Weak battery- Low voltage while cranking - Poor DME master relay electrical connection - Open or short DME master relay circuit

Description

ECM/PCM power relay control circuit low