P2601 on BMW: How to Diagnose & Fix
Coolant Pump "A" Control Circuit Range/Performance
1 BMW model · 1 documented issue · $500-$1,200 repair
P2601 on BMW by model: symptoms, diagnosis and fix
The 2011-2013 E70 X5 xDrive35i uses an electronically controlled N55 engine-coolant pump. A temperature warning, reduced-power message, fan running at high speed, or cooling-system fault can involve the pump, but low coolant, a leak, wiring or ground, power supply, thermostat, temperature sensing, trapped air, or another cooling fault can produce overlapping symptoms. Current BMW pump 11-51-5-A05-704 is cataloged for the N55 E70 application; it is not the common pump for the N52 xDrive30i, N63 xDrive50i, or every F15 X5, and the thermostat is a separate VIN-selected component.
Common Symptoms
- Engine overheating rapidly (even at idle)
- Coolant leaking near front of engine
- Steam from radiator/engine bay
- Engine temperature drops when accelerating (pump volume failure)
- Coolant warning light or "Engine Overheating" message
- Check engine light with cooling system codes
How to Fix
If the engine-temperature warning appears, stop safely, shut the engine off, and tow the vehicle if normal temperature cannot be confirmed. When cool, check coolant level and leaks, read BMW-specific faults, verify pump power/ground and communication, and run the ISTA coolant-pump activation/test plan. If those tests confirm the pump and BMW ETK/AIR selects 11-51-5-A05-704 for the VIN, replace it using the BMW procedure, select the thermostat separately only if testing or preventive planning justifies it, vacuum-fill or bleed the system as specified, and verify commanded pump operation and stable temperature. Do not use a fixed-mileage rule or this part number for an N52, N63, or F15 without VIN confirmation.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine BMW E70 N55 electric coolant pump 11515A05704OEM11515A05704
Confirmed failed E70 N55 main electric coolant pump. Fitment: 2011-2013 BMW X5 E70 xDrive35i with N55 where VIN/ETK selects 11515A05704; confirm required one-time-use bolts and treat the thermostat as a separate conditional item..
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Owner tips & cautions
- WarningIf an overheat warning appears, stop safely and shut the engine off; continued operation can cause major engine damage. Tow it if normal temperature cannot be verified.
- TipAsk for the BMW pump activation result plus power, ground, leak, and thermostat checks before approving the pump.
Sources for this issue (2)
P2601 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2601 mean on a BMW?
P2601 stands for "Coolant Pump "A" Control Circuit Range/Performance." The PCM detects that the coolant pump 'A' control circuit is electrically intact but the pump is not responding as expected — the measured behavior is out of the normal operating range (e.g., commanded flow/voltage doesn't produce the expected result). This points to a marginal/degraded pump or circuit rather than a hard open or short. On BMW it is documented across 1 model: X5.
What are the most common causes of P2601?
The most common causes of P2601 are: Worn or seizing electric coolant pump, High resistance in the pump wiring or connectors, Restricted coolant flow / air-bound cooling system, Intermittent pump or relay operation, PCM control-circuit performance fault. The specific cause varies by vehicle.
How much does it cost to fix P2601 on a BMW?
Published repair estimates on BMW range from $500 to $1,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P2601 on a different make?
View P2601 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.