P111A · Manufacturer communications

MAZDA · 2020-04-23

Some vehicles may exhibit engine overheating and poor A/C performance with DTC P111A:00 stored in memory. à ̄‚· DTC P111A:00 - Engine coolant temperature is high. NOTE: If the concern occurred during high speed driving, this Service Information is not applicable. Diagnose concern according to MGSS online. This concern may be due to improper control module software, which causes the cooling fan to run improperly, resulting in high coolant temperature. The fan control module is integrated into the cooling fan component.

MAZDA · 2015-09-28

SOME VEHICLES MAY EXHIBIT ONE OR MORE OF THE FOLLOWING CONCERNS: • THE HIGH ENGINE COOLANT TEMPERATURE WARNING LIGHT ON WITH DTC P111A:00 (ENGINE COOLANT TEMPERATURE IS HIGH) IN EXTREMELY COLD TEMPERATURES. • POOR HEATER PERFORMANCE. • LOW COOLANT CONCENTRATION. THE COOLANT CONCENTRATION MAY NOT HAVE BEEN ADJUSTED PROPERLY DURING MASS PRODUCTION. THIS MAY CAUSE COOLANT FREEZING IN EXTREMELY COLD TEMPERATURES.