VEHICLE: 2014 Peugeot 208
ISSUE: Engine overheating and the coolant temperature warning lamp illuminated
DIAGNOSIS & SOLUTION:
A customer is complaining that their 2014 Peugeot 208 1,6 THP is suffering with the engine overheating and the coolant temperature warning lamp illuminated. Trouble codes P023A and P023C are stored in the engine control module fault memory. We have had the radiator flow tested and pressurized the cooling system to check for leaks, but all seems to be OK. Do you have any ideas?
Yes, this has been reported to us before and it affects 208 models with EP6CDT (5FV) engine code. The fault is likely to be due to the engine coolant pump coupling pulley actuator failing. Check the engine coolant pump coupling pulley actuator arm extension (fig. 1.1.). If the arm extension is excessive, fit a new engine coolant pump coupling pulley actuator. Erase trouble codes and carry out road test to ensure fault has been resolved.