LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Alfa Romeo >> 2017 >> Giulia Base, AWD >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> HVAC
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Index: HVAC

DIAGNOSTIC CODE INDEX

DTC Description
B1901-11 B1901-11 - DISTRIBUTION DEFROST LEFT MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1901-15 B1901-15 - DISTRIBUTION DEFROST LEFT MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1902-11 B1902-11 - DISTRIBUTION DEFROST LEFT MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1902-12 B1902-12 - DISTRIBUTION DEFROST LEFT MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1902-77 B1902-77 - DISTRIBUTION DEFROST LEFT MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1903-11 B1903-11 - DISTRIBUTION DEFROST RIGHT MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1903-15 B1903-15 - DISTRIBUTION DEFROST RIGHT MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1904-11 B1904-11 - DISTRIBUTION DEFROST RIGHT MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1904-12 B1904-12 - DISTRIBUTION DEFROST RIGHT MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1904-77 B1904-77 - DISTRIBUTION DEFROST RIGHT MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1905-11 B1905-11 - DISTRIBUTION VENT FLOOR LEFT MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1905-15 B1905-15 - DISTRIBUTION VENT FLOOR LEFT MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1906-11 B1906-11 - DISTRIBUTION VENT FLOOR LEFT MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1906-12 B1906-12 - DISTRIBUTION VENT FLOOR LEFT MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1906-77 B1906-77 - DISTRIBUTION VENT FLOOR LEFT MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1907-11 B1907-11 - DISTRIBUTION VENT FLOOR RIGHT MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1907-15 B1907-15 - DISTRIBUTION VENT FLOOR RIGHT MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1908-11 B1908-11 - DISTRIBUTION VENT FLOOR RIGHT MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1908-12 B1908-12 - DISTRIBUTION VENT FLOOR RIGHT MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1908-77 B1908-77 - DISTRIBUTION VENT FLOOR RIGHT MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1909-11 B1909-11 - DISTRIBUTION REAR MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1909-15 B1909-15 - DISTRIBUTION REAR MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1910-11 B1910-11 - DISTRIBUTION REAR MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1910-12 B1910-12 - DISTRIBUTION REAR MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1910-77 B1910-77 - DISTRIBUTION REAR MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1911-11 B1911-11 - MIXER MOTOR FEEDBACK LEFT SIDE-CIRCUIT SHORT TO GROUND
B1911-15 B1911-15 - MIXER MOTOR FEEDBACK LEFT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1912-11 B1912-11 - MIXER MOTOR COMMAND LEFT SIDE-CIRCUIT SHORT TO GROUND
B1912-12 B1912-12 - MIXER MOTOR COMMAND LEFT SIDE-CIRCUIT SHORT TO BATTERY
B1912-77 B1912-77 - MIXER MOTOR COMMAND LEFT SIDE-COMMANDED POSITION NOT REACHABLE
B1913-11 B1913-11 - MIXER MOTOR FEEDBACK RIGHT SIDE-CIRCUIT SHORT TO GROUND
B1913-15 B1913-15 - MIXER MOTOR FEEDBACK RIGHT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1914-11 B1914-11 - MIXER MOTOR COMMAND RIGHT SIDE-CIRCUIT SHORT TO GROUND
B1914-12 B1914-12 - MIXER MOTOR COMMAND RIGHT SIDE-CIRCUIT SHORT TO BATTERY
B1914-77 B1914-77 - MIXER MOTOR COMMAND RIGHT SIDE-COMMANDED POSITION NOT REACHABLE
B1915-11 B1915-11 - RECIRCULATION MOTOR FEEDBACK-CIRCUIT SHORT TO GROUND
B1915-15 B1915-15 - RECIRCULATION MOTOR FEEDBACK-CIRCUIT SHORT TO BATTERY OR OPEN
B1916-11 B1916-11 - RECIRCULATION MOTOR COMMAND-CIRCUIT SHORT TO GROUND
B1916-12 B1916-12 - RECIRCULATION MOTOR COMMAND-CIRCUIT SHORT TO BATTERY
B1916-77 B1916-77 - RECIRCULATION MOTOR COMMAND-COMMANDED POSITION NOT REACHABLE
B1920-11 B1920-11 - SUN IRRADIATION SENSOR LEFT SIDE-CIRCUIT SHORT TO GROUND
B1920-15 B1920-15 - SUN IRRADIATION SENSOR LEFT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1921-11 B1921-11 - SUN IRRADIATION SENSOR RIGHT SIDE-CIRCUIT SHORT TO GROUND
B1921-15 B1921-15 - SUN IRRADIATION SENSOR RIGHT SIDE-SC TO VBATT OR OC CIRCUIT SHORT TO BATTERY OR OPEN
B1924-11 B1924-11 - TREATED AIR TEMPERATURE SENSOR INPUT VENT RIGHT SIDE-CIRCUIT SHORT TO GROUND
B1924-15 B1924-15 - TREATED AIR TEMPERATURE SENSOR INPUT VENT RIGHT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1925-11 B1925-11 - TREATED AIR TEMPERATURE SENSOR INPUT FLOOR RIGHT SIDE-CIRCUIT SHORT TO GROUND
B1925-15 B1925-15 - TREATED AIR TEMPERATURE SENSOR INPUT FLOOR RIGHT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1926-11 B1926-11 - TREATED AIR TEMPERATURE SENSOR INPUT VENT LEFT SIDE-CIRCUIT SHORT TO GROUND
B1926-15 B1926-15 - TREATED AIR TEMPERATURE SENSOR INPUT VENT LEFT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1927-11 B1927-11 - TREATED AIR TEMPERATURE SENSOR INPUT FLOOR LEFT SIDE-CIRCUIT SHORT TO GROUND
B1927-15 B1927-15 - TREATED AIR TEMPERATURE SENSOR INPUT FLOOR LEFT SIDE-CIRCUIT SHORT TO BATTERY OR OPEN
B1930-11 B1930-11 - EVAPORATOR TEMPERATURE SENSOR-CIRCUIT SHORT TO GROUND
B1930-15 B1930-15 - EVAPORATOR TEMPERATURE SENSOR-CIRCUIT SHORT TO BATTERY OR OPEN
B1931-11 B1931-11 - INTERNAL TEMPERATURE SENSOR-CIRCUIT SHORT TO GROUND
B1931-15 B1931-15 - INTERNAL TEMPERATURE SENSOR-CIRCUIT SHORT TO BATTERY OR OPEN
B1935-11 B1935-11 - AIR QUALITY SENSOR-CIRCUIT SHORT TO GROUND
B1935-15 B1935-15 - AIR QUALITY SENSOR-CIRCUIT SHORT TO BATTERY OR OPEN
B1935-96 B1935-96 - AIR QUALITY SENSOR-COMPONENT INTERNAL FAILURE
B1937-64 B1937-64 - HVAC CONTROL PANEL MODULE LIN BUS-SIGNAL PLAUSIBILITY FAILURE
B1938-64 B1938-64 - HUMIDITY SENSOR LIN BUS-SIGNAL PLAUSIBILITY FAILURE
B1938-96 B1938-96 - HUMIDITY SENSOR LIN BUS-COMPONENT INTERNAL FAILURE
B1940-16 B1940-16 - CABIN FAN-CIRCUIT VOLTAGE BELOW THRESHOLD
B1940-17 B1940-17 - CABIN FAN-CIRCUIT VOLTAGE ABOVE THRESHOLD
B1941-11 B1941-11 - PTC LOW POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO GROUND
B1941-15 B1941-15 - PTC LOW POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO BATTERY OR OPEN
B1942-11 B1942-11 - PTC MEDIUM POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO GROUND
B1942-15 B1942-15 - PTC MEDIUM POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO BATTERY OR OPEN
B1943-11 B1943-11 - PTC HIGH POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO GROUND
B1943-15 B1943-15 - PTC HIGH POWER RELAY DRIVING COMMAND OUTPUT-CIRCUIT SHORT TO BATTERY OR OPEN
B1945-11 B1945-11 - EXTERNAL CONTROL VARIABLE DISPLACEMENT COMMAND-CIRCUIT SHORT TO GROUND
B1945-15 B1945-15 - EXTERNAL CONTROL VARIABLE DISPLACEMENT COMMAND-CIRCUIT SHORT TO BATTERY OR OPEN
B1947-42 B1947-42 - RAM ROM EEPROM ETC INTERNAL FAILURE-GENERAL MEMORY FAILURE
B1948-49 B1948-49 - KEYBOARD NA-JAMMED KEY INTERNAL ELECTRONIC FAILURE
U0001-87 CAN LINE-MISSING MESSAGE
U0001-88 CAN LINE-BUS OFF
U1700-86 BODY COMPUTER MODULE (BCM) - SIGNAL INVALID
U1700-87 U1700-87 - BODY CONTROL MODULE (BCM) - MISSING MESSAGE
U1703-86 IPC (INSTRUMENT PANEL CLUSTER) - SIGNAL INVALID
U1703-87 INSTRUMENT PANEL CLUSTER (IPC) - MISSING MESSAGE
U1724-86 U1724-86 - ENTERTAINMENT TELEMATIC MODULE (ETM) - INVALID SIGNAL
U1724-87 U1724-87 - ENTERTAINMENT TELEMATIC MODULE (ETM) - MISSING MESSAGE