Autodata’s Technical Team share their fixes to common problems raised through Autodata’s technical helpline, available to all UK customers.
A customer is complaining that their 2014 Peugeot 208 1.6 THP is suffering with an overheating engine and that the coolant temperature warning lamp is illuminated. Trouble codes P023A and P023C are stored in the engine control module fault memory. We have had the radiator flow tested, and we have pressurised the cooling system to check for leaks, but everything seems to be normal. Do you have any ideas?
This problem 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. If the arm extension is excessive, fit a new engine coolant pump coupling pulley actuator. Following this, erase the trouble codes and carry out a road test to ensure that the fault has been resolved.