P26B2 on Volkswagen
Charge Air Cooler Coolant Pump Control Circuit
P26B2 on Volkswagen vehicles indicates charge air cooler coolant pump control circuit. Au7o has documented this code across 1 Volkswagen model — most commonly on Golf. This code relates to the control circuit for the charge air cooler (intercooler) coolant pump — an electric auxiliary pump that circulates coolant through the intercooler on many turbocharged or supercharged engines to cool the compressed intake air. The engine computer commands this pump and monitors its control circuit; when the electrical signal is outside the expected range (such as an open, short, or out-of-range condition), it sets P26B2. A pump that isn't running properly can let intake air temperatures climb, reducing power and potentially triggering protective engine derating. Typical repair costs on Volkswagen range from $500 to $1,200, depending on the specific model and root cause.
Common Causes of P26B2
- •Failed charge air cooler coolant pump
- •Corroded or loose pump connector
- •Open, shorted, or chafed wiring in the pump control circuit
- •Blown fuse or faulty relay for the pump
- •Poor ground for the pump circuit
- •Low coolant level in the intercooler loop
- •Faulty pump control driver/module or PCM (rare)
P26B2 on Volkswagen by Model
Volkswagen Golf(1 issue)
- MK7 2.0T Water Pump Failure2015-2021
The MK7 Golf GTI/R with the EA888 Gen 3 engine has issues with premature water pump failure. The electric water pump can fail internally, causing overheating. VW extended warranty coverage on some VINs.
Looking for P26B2 on a different make?
View P26B2 across all makes →Frequently Asked Questions
What does P26B2 mean on Volkswagen?▼
P26B2 stands for "Charge Air Cooler Coolant Pump Control Circuit." This code relates to the control circuit for the charge air cooler (intercooler) coolant pump — an electric auxiliary pump that circulates coolant through the intercooler on many turbocharged or supercharged engines to cool the compressed intake air. The engine computer commands this pump and monitors its control circuit; when the electrical signal is outside the expected range (such as an open, short, or out-of-range condition), it sets P26B2. A pump that isn't running properly can let intake air temperatures climb, reducing power and potentially triggering protective engine derating. On Volkswagen specifically, this code is documented across 1 model.
What causes P26B2 on Volkswagen vehicles?▼
Common causes on Volkswagen: Failed charge air cooler coolant pump, Corroded or loose pump connector, Open, shorted, or chafed wiring in the pump control circuit, Blown fuse or faulty relay for the pump, Poor ground for the pump circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P26B2 on a Volkswagen?▼
Repair costs on Volkswagen range from $500 to $1,200, depending on the specific model and root cause.
Which Volkswagen models have P26B2 documented?▼
Au7o has documented P26B2 on 1 Volkswagen model: Golf.