Subaru Crosstrek Service Manual: List of diagnostic trouble code (dtc) List
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > List of Diagnostic Trouble Code (DTC)
LIST
(1) Keyless access system
DTC | Item | Content of diagnosis | Note |
U0073 | CONTROL MODULE COMMUNICATION BUS OFF | Detected when CAN line abnormality is detected. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF"> |
U0100 | LOST COMMUNICATION WITH ECM/PCM “A” | Detected when CAN data from the engine control module (ECM) does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0100 LOST COMMUNICATION WITH ECM/PCM “A”"> |
U0101 | LOST COMMUNICATION WITH TCM | Detected when CAN data from TCM does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0101 LOST COMMUNICATION WITH TCM"> |
U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | Detected when CAN data from VDC does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE"> |
U0140 | LOST COMMUNICATION WITH BODY CONTROL MODULE | Detected when CAN data from BIU does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE"> |
U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | Detected when CAN data from meter does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE"> |
U0401 | INVALID DATA RECEIVED FROM ECM/PCM “A” | Detected when there is malfunction in CAN data from the engine control module (ECM). | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM “A”"> |
U0422 | INVALID DATA RECEIVED FROM BODY CONTROL MODULE | Detected when CAN data from BIU is abnormal. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE"> |
U1120 | LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE | Detected when CAN data from hybrid system or from Auto Start Stop system does not arrive. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U1120 LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE"> |
B1242 | WIRELESS TUNER | When short circuit occurs in harness between keyless access CM and receiver. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1242 WIRELESS TUNER"> |
B2271 | IGN RELAY CONTROL CIRCUIT |
• When malfunction is detected in IG1 and IG2 drive circuits in the keyless access CM.
• When malfunction is detected in IG hold circuit in the keyless access CM.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2271 IGN RELAY CONTROL CIRCUIT">
B2274
ACC RELAY CONTROL CIRCUIT
When malfunction is detected in ACC relay drive circuit in the keyless access CM or external circuit.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2274 ACC RELAY CONTROL CIRCUIT">
B2275
ENGINE START REQUEST CONTROL CIRCUIT
• When malfunction is detected in engine start permission signal output circuit in the keyless access CM.
• When malfunction is detected in external engine start permission signal circuit.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2275 ENGINE START REQUEST CONTROL CIRCUIT">
B2276
ACC RELAY OFF SIGNAL
When input error occurs in accessory relay cut input signal of keyless access CM.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2276 ACC RELAY OFF SIGNAL">
B2277
SUBMERGING CIRCUIT
When the water-submersion detection circuit integrated into the keyless access CM detects the water submersion.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2277 SUBMERGING CIRCUIT">
B2282
VEHICLE SPEED SIGNAL CORRELATION
When the vehicle speed signal transmitted from VDC via solid line and the vehicle speed signal transmitted via CAN communication line do not match.)
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2282 VEHICLE SPEED SIGNAL CORRELATION">
B2283
VEHICLE SPEED SENSOR
Either of the following malfunctions is detected. (Vehicle speed sensor failure is detected.)
• Vehicle speed signal failure detection 1: Excessive deceleration detection
• Vehicle speed signal failure detection 2: Engine speed interlock detection
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2283 VEHICLE SPEED SENSOR">
B2284
BRAKE SIGNAL CORRELATION
When the brake signal transmitted via solid line and the brake signal transmitted via CAN communication line do not match.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2284 BRAKE SIGNAL CORRELATION">
B2285
STEERING LOCK POSITION SIGNAL CORRELATION
When the steering lock position signal transmitted from the steering lock CM via solid line and the steering lock position signal transmitted via LIN communication system do not match.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2285 STEERING LOCK POSITION SIGNAL CORRELATION">
B2286
ENGINE SPEED SIGNAL(WITHOUT Auto Start Stop)
When the engine speed signal transmitted from the ECM via solid line and the engine speed signal transmitted via CAN communication line do not match.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2286 ENGINE SPEED SIGNAL(WITHOUT Auto Start Stop)">
B228A
ENGINE SPEED SIGNAL(WITH Auto Start Stop)
When the engine speed signal transmitted from the ECM via solid line and the engine speed signal transmitted via CAN communication line do not match.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B228A ENGINE SPEED SIGNAL(WITH Auto Start Stop)">
B2779
REMOTE CONTROL ENGINE STARTER COLLATION
When the keyless access CM does not respond to engine start even when the remote control engine starter is ON, or when there is a code mismatch.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2779 REMOTE CONTROL ENGINE STARTER COLLATION">
B2781
STEERING LOCK CM CONTROL CIRCUIT
• When malfunction is detected in lock/unlock position detection sensor.
• When the open or short circuit in the steering lock motor drive circuit is detected.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2781 STEERING LOCK CM CONTROL CIRCUIT">
B2782
STEERING LOCK DRIVE REQUEST SIGNAL CORRELATION
When the open or short circuit in the steering lock motor power supply circuit is detected.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2782 STEERING LOCK DRIVE REQUEST SIGNAL CORRELATION">
B2784
ANTENNA CIRCUIT (PUSH ENGINE SWITCH)
When open or short circuit occurs in the antenna coil.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2784 ANTENNA CIRCUIT (PUSH ENGINE SWITCH)">
B2785
LIN COMMUNICATION
When the keyless access CM detects the collation system LIN bus communication error three times in a row.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2785 LIN COMMUNICATION">
B2786
STEERING LOCK CM COMMUNICATION
When communication between keyless access CM and steering lock CM is interrupted for a set amount of time.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2786 STEERING LOCK CM COMMUNICATION">
B2788
IGN SIGNAL CORRELATION (STEERING LOCK CM)
When mismatch occurs in the IG1 input of the steering lock CM between LIN communication line input and solid line input.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2788 IGN SIGNAL CORRELATION (STEERING LOCK CM)">
B2789
ID CODE BOX COMMUNICATION
• When communication between keyless access CM and ID code box is interrupted for a set amount of time.
• Open or short circuit in the wiring harness between keyless access CM and ID code box.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2789 ID CODE BOX COMMUNICATION">
B278A
PUSH ENGINE SWITCH POWER SUPPLY CIRCUIT
When the power supply circuit of the push button ignition switch is shorted to ground.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B278A PUSH ENGINE SWITCH POWER SUPPLY CIRCUIT">
B278D
ID CODE BOX JUDGMENT CIRCUIT
• When ID code box ON input is detected while the ID code box setting is set to OFF.
• When ID code box LIN signal is received while the ID code box setting is set to OFF.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B278D ID CODE BOX JUDGMENT CIRCUIT">
B2790
ID CODE BOX CIRCUIT
An error has occurred inside the ID code box.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2790 ID CODE BOX CIRCUIT">
B27A1
DRIVER SIDE EXTERNAL ANTENNA OPEN
When open circuit occurs in the harness between keyless access CM and driver’s side front door outer handle.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A1 DRIVER SIDE EXTERNAL ANTENNA OPEN">
B27A2
PASSENGER SIDE EXTERNAL ANTENNA OPEN
When open circuit occurs in the harness between keyless access CM and passenger’s side front door outer handle.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A2 PASSENGER SIDE EXTERNAL ANTENNA OPEN">
B27A5
FRONT INTERNAL ANTENNA OPEN
When open circuit occurs in the harness between keyless access CM and front interior antenna.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A5 FRONT INTERNAL ANTENNA OPEN">
B27A7
TRUNK/REAR GATE INTERNAL ANTENNA OPEN
When open circuit occurs in the harness between keyless access CM and rear interior antenna.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A7 TRUNK/REAR GATE INTERNAL ANTENNA OPEN">
B27A8
TRUNK/REAR GATE EXTERNAL ANTENNA OPEN
When open circuit occurs in the harness between keyless access CM and rear exterior antenna.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B27A8 TRUNK/REAR GATE EXTERNAL ANTENNA OPEN">
(2) Immobilizer (ECM)
DTC | Item | Content of diagnosis | Note |
B1571 | REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM) | Reference code mismatch occurs between keyless access CM (model without ID code box) or ID code box (model with ID code box) and ECM. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1571 REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM)"> |
B1572 | IMM CIRCUIT EXCEPT ANTENNA CIRCUIT | Communication error occurs between keyless access CM (model without ID code box) or ID code box (model with ID code box) and ECM. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1572 IMM CIRCUIT EXCEPT ANTENNA CIRCUIT"> |
B1576 | EGI CONTROL MODULE EEPROM | ECM malfunctioning | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1576 EGI CONTROL MODULE EEPROM"> |
B1577 | IMM CONTROL MODULE EEPROM | Malfunction occurs in keyless access CM (model without ID code box) or ID code box (model with ID code box). | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1577 IMM CONTROL MODULE EEPROM"> |
Keyless access system check Operation
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Keyless Access System CheckOPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target ...
Read diagnostic trouble code (dtc) Operation
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Read Diagnostic Trouble Code (DTC)OPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the ...
Other materials:
Installation
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