Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2004OUTBACK BASE, 4D WAGON, EJ251, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE CONTROL SYSTEM - VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)DIAGNOSTICS CHART WITH SELECT MONITORNOTES
2004 Subaru Outback Base, 4D Wagon, EJ251, Standard
Diagnostics Chart with Select Monitor: Notes
2004 Subaru Outback Base, 4D Wagon, EJ251, StandardSECTION Notes
DTC INDEX
| DTC | Description |
|---|---|
| DTC 21 | FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY |
| DTC 23 | FRONT LEFT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY |
| DTC 25 | REAR RIGHT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY |
| DTC 27 | REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORTED BATTERY |
| DTC 22 | FRONT RIGHT ABS SENSOR SIGNAL |
| DTC 24 | FRONT LEFT ABS SENSOR SIGNAL |
| DTC 26 | REAR RIGHT ABS SENSOR SIGNAL |
| DTC 28 | REAR LEFT ABS SENSOR SIGNAL |
| DTC 29 | ANY ONE OF FOUR ABS SENSOR SIGNAL |
| DTC 31 | FR HOLD VALVE MALFUNCTION (FRONT RIGHT INLET VALVE MALFUNCTION) |
| DTC 33 | FL HOLD VALVE MALFUNCTION (FRONT LEFT INLET VALVE MALFUNCTION) |
| DTC 35 | RR HOLD VALVE MALFUNCTION (REAR RIGHT INLET VALVE MALFUNCTION) |
| DTC 37 | RL HOLD VALVE MALFUNCTION (REAR LEFT INLET VALVE MALFUNCTION) |
| DTC 61 | NORMAL OPENING VALVE 2 MALFUNCTION (PRIMARY CUT VALVE MALFUNCTION) |
| DTC 62 | NORMAL OPENING VALVE 1 MALFUNCTION (SECONDARY CUT VALVE MALFUNCTION) |
| DTC 32 | FR PRESSURE REDUCING VALVE MALFUNCTION (FRONT RIGHT OUTLET VALVE MALFUNCTION) |
| DTC 34 | FL PRESSURE REDUCING VALVE MALFUNCTION (FRONT LEFT OUTLET VALVE MALFUNCTION) |
| DTC 36 | RR PRESSURE REDUCING VALVE MALFUNCTION (REAR RIGHT OUTLET VALVE MALFUNCTION) |
| DTC 38 | RL PRESSURE REDUCING VALVE MALFUNCTION (REAR LEFT OUTLET VALVE MALFUNCTION) |
| DTC 63 | NORMAL CLOSING VALVE 2 MALFUNCTION (PRIMARY SUCTION VALVE MALFUNCTION) |
| DTC 64 | NORMAL CLOSING VALVE 1 MALFUNCTION (SECONDARY SUCTION VALVE MALFUNCTION) |
| DTC 41 | ELECTRICAL CONTROL MODULE (VDC CONTROL MODULE MALFUNCTION) |
| DTC 42 | POWER SUPPLY VOLTAGE LOW |
| DTC 43 | AET COMMUNICATION LINE MALFUNCTION |
| DTC 43 | AEB COMMUNICATION LINE MALFUNCTION |
| DTC 43 | AEC COMMUNICATION LINE MALFUNCTION |
| DTC 44 | TCM COMMUNICATION CIRCUIT |
| DTC 45 | INCORRECT VDC CONTROL MODULE |
| DTC 45 | TCM MALFUNCTION SPECIFICATIONS |
| DTC 46 | ABNORMAL VOLTAGE OF 5 V POWER SUPPLY |
| DTC 47 | IMPROPER CAN COMMUNICATION |
| DTC 48 | IMPROPER EAC COMMUNICATION |
| DTC 48 | EAS COMMUNICATION LINE GROUNDING SHORTED |
| DTC 48 | ERRONEOUS COMMUNICATION FROM EGI TO VDC |
| DTC 49 | ABNORMAL ENGINE SPEED SIGNAL |
| DTC 51 | VALVE RELAY |
| DTC 51 | VALVE RELAY ON FAILURE |
| DTC 52 | MOTOR AND MOTOR RELAY OFF FAILURE |
| DTC 52 | MOTOR AND MOTOR RELAY ON FAILURE |
| DTC 52 | MOTOR MALFUNCTION |
| DTC 71 | STEERING ANGLE SENSOR OFFSET IS TOO BIG |
| DTC 71 | CHANGE RANGE OF STEERING ANGLE SENSOR IS TOO BIG |
| DTC 71 | STEERING ANGLE SENSOR MALFUNCTION |
| DTC 71 | NO SIGNAL FROM STEERING ANGLE SENSOR |
| DTC 72 | ABNORMAL YAW RATE SENSOR OUTPUT |
| DTC 72 | VOLTAGE INPUTTED TO YAW RATE SENSOR EXCEEDS SPECIFICATION |
| DTC 72 | ABNORMAL YAW RATE SENSOR REFERENCE VOLTAGE |
| DTC 72 | CHANGE RANGE OF YAW RATE SENSOR SIGNAL IS TOO BIG |
| DTC 73 | LATERAL G SENSOR OFFSET IS TOO BIG |
| DTC 73 | ABNORMAL LATERAL G SENSOR OUTPUT |
| DTC 73 | CHANGE RANGE OF LATERAL G SENSOR IS TOO BIG |
| DTC 73 | EXCESSIVE LATERAL G SENSOR SIGNAL |
| DTC 73 | VOLTAGE INPUTTED TO LATERAL G SENSOR EXCEEDS SPECIFICATION |
| DTC 74 | VOLTAGE INPUTTED TO PRESSURE SENSOR 1 EXCEEDS SPECIFICATION (PRIMARY PRESSURE SENSOR) |
| DTC 74 | VOLTAGE INPUTTED TO PRESSURE SENSOR 2 EXCEEDS SPECIFICATION (SECONDARY PRESSURE SENSOR) |
| DTC 74 | PRESSURE SENSOR 1 OFFSET IS TOO BIG (PRIMARY PRESSURE SENSOR) |
| DTC 74 | PRESSURE SENSOR 2 OFFSET IS TOO BIG (SECONDARY PRESSURE SENSOR) |
| DTC 74 | DIFFERENTIAL PRESSURE OF PRESSURE SENSOR IS TOO BIG |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.