Subaru Legacy BN/BS (2015-2019) Service Manual: Diagnostic procedure with diagnostic trouble code (dtc)
Subaru Legacy BN/BS (2015-2019) Service Manual / Keyless access with push button start system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc)
- Dtc u0073 control module communication bus off
- Dtc u0100 lost communication with ecm/pcm "a"
- Dtc u0422 invalid data received from body control module
- Dtc u0401 invalid data received from ecm/pcm "a"
- Dtc u0155 lost communication with instrument panel cluster (ipc) control module
- Dtc b2793 back up power
- Dtc b1571 reference code incompatibility (immobilizer cm to ecm)
- Dtc b1577 imm control module eeprom
- Dtc b1576 egi control module eeprom
- Dtc b1572 imm circuit except antenna circuit
- Dtc b27a8 trunk/rear gate external antenna open
- Dtc b27a7 trunk/rear gate internal antenna open
- Dtc b27a6 rear internal antenna open
- Dtc b27a5 front internal antenna open
- Dtc b27a2 passenger side external antenna open
- Dtc b27a1 driver side external antenna open
- Dtc b278d id code box judgment circuit
- Dtc b278a push engine switch power supply circuit
- Dtc b2790 id code box circuit
- Dtc b2789 id code box communication
- Dtc b2788 ign signal correlation (steering lock cm)
- Dtc b2786 steering lock cm communication
- Dtc b2785 lin communication
- Dtc b2784 antenna circuit (push engine switch)
- Dtc b2782 steering lock drive request signal correlation
- Dtc b2781 steering lock cm control circuit
- Dtc b2779 remote control engine starter collation
- Dtc b2286 engine speed signal(without auto start stop)
- Dtc b2285 steering lock position signal correlation
- Dtc b2284 brake signal correlation
- Dtc b2283 vehicle speed sensor
- Dtc b2282 vehicle speed signal correlation
- Dtc b2277 submerging circuit
- Dtc u0140 lost communication with body control module
- Dtc u0122 lost communication with vehicle dynamics control module
- Dtc b2276 acc relay off signal
- Dtc b2275 engine start request control circuit
- Dtc b2274 acc relay control circuit
- Dtc b2271 ign relay control circuit
- Dtc u0101 lost communication with tcm
Electrical specification
1. KEYLESS ACCESS CMTerminal No.ContentsMeasuring conditionStandard(i75) No. 1 ←> Chassis groundGroundAlways *1Less than 1 -(i75) No. 2 ←> 1Immobilizer signal reception (ignition switch)Wait ...
Dtc u0073 control module communication bus off
Detected when CAN line abnormality is detected.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...
Other materials:
Regarding malfunction
CAUTION
Never leave or store the access
key inside the vehicle or within
6.6 ft (2 m) around the vehicle (e.
g., in the garage). The access key
may be locked inside the vehicle,
or the battery may discharge
rapidly. Note that the push-button
ignition swit ...
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