P2600 on BMW
Coolant Pump "A" Control Circuit/Open
P2600 on BMW vehicles indicates coolant pump "a" control circuit/open. Au7o has documented this code across 1 BMW model — most commonly on 6 Series. The PCM commands the auxiliary/electric coolant (water) pump 'A' but detects an open in its control circuit — essentially no electrical continuity, as if a wire were cut, a connector unplugged, a fuse blown, or the relay failed. The pump cannot be driven, so the module sets this code. Typical repair costs on BMW range from $900 to $3,300, depending on the specific model and root cause.
Common Causes of P2600
- •Open or broken wiring in the coolant pump control circuit
- •Corroded, loose, or unplugged pump connector
- •Failed coolant pump relay or blown fuse
- •Failed electric coolant pump (internal open winding)
- •PCM driver circuit fault
P2600 on BMW by Model
BMW 6 Series(1 issue)
- N55 Electric Water Pump Failure (640i, F06/F12/F13)2012-2018
The 2012-2018 640i uses the N55 inline-six with an electric main coolant pump that is a known wear item across every N55 application. On 6Post, 640i owners report failures around 60,000-100,000 miles: sudden high-temperature warnings, reduced-power mode, the pump running continuously after shutdown, or a stored coolant-pump fault. Because the pump is electronic it usually fails without the whining or weeping a mechanical pump gives, and overheating can follow quickly. The V8 650i's N63 does not share this pump.
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View P2600 across all makes →Frequently Asked Questions
What does P2600 mean on BMW?▼
P2600 stands for "Coolant Pump "A" Control Circuit/Open." The PCM commands the auxiliary/electric coolant (water) pump 'A' but detects an open in its control circuit — essentially no electrical continuity, as if a wire were cut, a connector unplugged, a fuse blown, or the relay failed. The pump cannot be driven, so the module sets this code. On BMW specifically, this code is documented across 1 model.
What causes P2600 on BMW vehicles?▼
Common causes on BMW: Open or broken wiring in the coolant pump control circuit, Corroded, loose, or unplugged pump connector, Failed coolant pump relay or blown fuse, Failed electric coolant pump (internal open winding), PCM driver circuit fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2600 on a BMW?▼
Repair costs on BMW range from $900 to $3,300, depending on the specific model and root cause.
Which BMW models have P2600 documented?▼
Au7o has documented P2600 on 1 BMW model: 6 Series.