P2560 on 2017-2025 Porsche 718 Cayman — Engine Coolant Level Low
1 vehicles · 1 makes · $1,500-$4,000 repair
How to diagnose and fix P2560: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Porsche 718 Cayman · 2017–2025
The plastic coolant expansion/overflow reservoir on the 982 718 can crack along the seam where its upper and lower halves are joined, causing slow coolant loss that often only appears when the system is hot and pressurized. Forum discussion and a 982 service bulletin tie a higher incidence to cars built roughly March-August 2018; an integrated coolant-level sensor can also fail and trigger a 'refill coolant / stop driving' warning even when actual coolant temperature is normal. Because of where the reservoir is packaged, replacement on the 982 typically requires dropping the engine/transmission assembly, making an otherwise cheap part very expensive to address.
Common Symptoms
- Slow coolant loss, worse when hot
- Coolant smell
- 'Refill coolant / stop driving' warning with normal temperature
- Damp residue around the reservoir seam
How to Fix
Replace the coolant reservoir (and the level sensor if faulty) with the updated part; confirm whether the symptom is a true crack/leak versus a faulty level sensor before authorizing the engine-out labor. Pressure-test the system after repair.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Porsche 982121407C coolant expansion tank
Confirm VIN and do not order for a cap, hose, filler-neck or wiring fault.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
Find P2560 by make
Browse every documented model and issue for your make.
P2560 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 P2560 mean?
P2560 stands for "Engine Coolant Level Low." The PCM determines, via the coolant level sensor, that engine coolant level is actually low. Unlike the circuit codes, this indicates a real low-coolant condition that can lead to overheating.
What are the most common causes of P2560?
The most common causes of P2560 are: Coolant leak (hoses, radiator, water pump, heater core), Failed head gasket consuming coolant, Loose/leaking radiator cap or expansion tank, Insufficient coolant fill after service, Internal/external coolant loss. The specific cause varies by vehicle.
How much does it cost to fix P2560?
Repair costs for P2560 range from $1,500 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by P2560?
Au7o has documented P2560 across 1 vehicle models from 1 manufacturers: Porsche.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.