Eberspacher Espar Airtronic M2 D4R ECU Control Unit 12v | 252746995000

This Eberspacher electronic control unit is for the Airtronic M2 D4R 12 V heater versions. It is for 12 V systems only.

Fault codes that could indicate a control unit fault include P000110 (087), air inlet error – interruption; P000111 (088) and P000112 (089), air inlet errors – short circuit; P000120 (064), flame sensor – interruption; P000121 (065), flame sensor – short circuit; P000131 (061), external air temperature sensor – short circuit; and P000143 (006), air pressure sensor – implausible signal.

Other applicable codes are P000301 (090), watchdog reset; P000302 (090), too many watchdog resets; P000303 (099), operating lockout due to too frequent output stage errors; P000304 (091), too many resets (loose contact); P000305 (095), control box not calibrated; and P000306 (098), defective second cutout circuit. Further investigation is always required to establish whether a fault code indicates a control unit fault.