LAN SYSTEM (DIAGNOSTICS) > List of Diagnostic Trouble Code (DTC)

LIST

DTC

Item

Content of diagnosis

Note

B1100

Integ. Unit System Error

Memory read out error in body integrated unit

B1101

BATT p/supply malfunction cont.

• Open or short in battery power supply control circuit

• Voltage malfunction caused by poor contact

B1102

BATT p/supply malfunction backup

Voltage malfunction caused by poor contact of battery power supply backup circuits

B1103

Ignition power failure

Voltage malfunction caused by poor contact of IGN power supply circuits

B1104

ACC power failure

Voltage malfunction caused by poor contact of ACC power supply circuits

B1105

Key interlock circuit abnormal

Open or short in key interlock circuit

B1106

shift lock circuit Failure

Open or short in shift lock circuit

U1201

CAN-HS counter abnormal

Communication is unstable because of high speed CAN communication error.

U1202

CAN-HS bus off

Communication error occurs because of high speed CAN error.

U1211

CAN-HS ECM data abnormal

Received error data from ECM.

U1212

CAN-HS TCM data abnormal

Received error data from TCM.

U1213

CAN-HS VDC/ABS data abnormal

Received error data from VDC/ABS module.

U1217

CAN-HS EPS data abnormal

Received error data from EPS module.

U1221

CAN-HS ECM no-receive data

Not received data from ECM.

U1222

CAN-HS TCM no-receive data

Not received data from TCM.

U1223

CAN-HS VDC/ABS no-receive data

Not received data from VDC/ABS CM.

U1227

CAN-HS EPS no-receive data

Not received data from EPS CM.

U1300

CAN-LS malfunction

Open or short in CAN-LS circuit, on ether side

U1301

CAN-LS counter abnormal

Communication is unstable because of low speed CAN communication error.

U1302

CAN-LS bus off

Integrated unit communication is shut down because of low speed CAN communication error.

U1303

Wake-up line abnormal

Open or ground short circuit of wake-up line.

U1311

CAN-LS meter unit data abnormal

Received error data from meter.

U1321

CAN-LS meter no-receive data

Not received data from meter.

U1327

CAN-LS G/W no-receive data

Not received data from gateway CM.

B1401

M Collation NG

Malfunction related immobilizer

B1402

Immobilizer Key Collation NG

Malfunction related immobilizer

B1403

E/G request NG

Malfunction related immobilizer

B1404

Smart registration NG failure

Ends with error during keyless access registration.

B1500

Keyless UART com. Malfunction

Open or short circuit in keyless UART circuit

1. DTC TABLE

NOTE:

When more than two DTC codes are recorded, referring to their combination will make it easy to identify the possible cause. Refer to the list for typical examples.

DTC to Check

Diagnostic Code that was displayed.

Probable cause

Body integrated unit

ECM

TCM

VDC/ABS CM

B1100

B1100

There could be a problem in the body integrated unit.

U1221

U1221

P1718

C0057

It is possible that the ECM is faulty.

U1222

U1222

P0600

C0057

It is possible that the TCM is faulty.

U1223

U1223

P0600

P1718

It is possible that the VDC/ABS CM is faulty.

U1321

U1321

It is possible that the combination meter is faulty.

B1500

B1500

It's possible that there is an internal problem in the keyless entry control module, or a open circuit in the communication line.

2. FREEZE FRAME DATA

NOTE:

Data stored at the time of trouble occurrence is shown on the display.

Freeze frame data will be memorized maximum to 20.

If freeze frame data is not stored in memory correctly (caused by low power supply of body integrated unit), DTC will be displayed with “?” on the head of it in the Subaru Select Monitor display. This shows it may be an unreliable reading.