P00B7 on Audi: How to Diagnose & Fix
Engine Coolant Flow Low/Performance
1 Audi model · 1 documented issue · $400-$1,200 repair
P00B7 on Audi by model: symptoms, diagnosis and fix
Q2 petrol owners report coolant loss from a leaking water pump at relatively low mileage — one documented 2018 Q2 case at only ~30,000 miles. The EA888/EA211 TFSI family uses an integrated plastic water-pump/thermostat housing that becomes brittle and cracks (commonly at the plastic pipe ports or the shaft seal behind the drive gear), causing seepage or sudden coolant loss. A failing pump bearing can also misalign the pulley. Left unchecked, coolant loss leads to overheating; on belt-driven engines a degraded pump can also threaten timing-belt integrity.
Common Symptoms
- Low coolant warning / repeatedly topping up coolant
- Coolant smell or visible pink/orange residue at front of engine
- Temperature gauge rising / overheating
- Puddle under front of car
How to Fix
Replace the water pump and thermostat housing (typically an updated revised unit) and refill/bleed with the correct G13 coolant; many shops do this together with the timing belt service. Inspect related coolant hoses/thermostat at the same time.
Sources for this issue (1)
P00B7 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 P00B7 mean on a Audi?
P00B7 stands for "Engine Coolant Flow Low/Performance." P00B7 means the powertrain control module has determined that coolant flow through the engine's cooling system is too low or not performing as expected. The computer compares signals — typically from the engine coolant temperature sensor and a second temperature sensor (such as the radiator outlet) — and flags this code when the readings indicate coolant isn't circulating properly to manage engine temperature. Restricted flow can let the engine run hotter than designed, risking overheating. The cause is usually a thermostat, water pump, low coolant, or a sensor reading problem. On Audi it is documented across 1 model: Q2.
What are the most common causes of P00B7?
The most common causes of P00B7 are: Stuck or faulty thermostat, Low coolant level or air pockets in the system, Failing water pump (mechanical or electric), Faulty engine coolant temperature or radiator temperature sensor, Clogged radiator, hoses, or coolant passages with sediment/debris, Coolant leak reducing system volume, Wiring/connector faults at the temperature sensors or PCM control issue. The specific cause varies by vehicle.
How much does it cost to fix P00B7 on a Audi?
Published repair estimates on Audi range from $400 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 P00B7 on a different make?
View P00B7 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.