P00B7 on Audi
Engine Coolant Flow Low/Performance
P00B7 on Audi vehicles indicates engine coolant flow low/performance. Au7o has documented this code across 1 Audi model — most commonly on Q2. 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. Typical repair costs on Audi range from $400 to $1,200, depending on the specific model and root cause.
Common Causes of P00B7
- •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
P00B7 on Audi by Model
Audi Q2(1 issue)
- Coolant / water pump leak on TFSI engines (cracked plastic pump housing)2016-2021
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.
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View P00B7 across all makes →Frequently Asked Questions
What does P00B7 mean on 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 specifically, this code is documented across 1 model.
What causes P00B7 on Audi vehicles?▼
Common causes on Audi: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P00B7 on a Audi?▼
Repair costs on Audi range from $400 to $1,200, depending on the specific model and root cause.
Which Audi models have P00B7 documented?▼
Au7o has documented P00B7 on 1 Audi model: Q2.