Subaru Legacy BN/BS (2015-2019) Service Manual: Engine (diagnostics)(h4do)
Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h4do)
- Active test operation
- Basic diagnostic procedure procedure
- Check list for interview check
- Clear memory mode operation
- Data link connector note
- Electrical component location location
- General diagnostic table inspection
- General scan tool operation
- Inspection mode procedure
- Read diagnostic trouble code (dtc) operation
- Diagnostic procedure with diagnostic trouble code (dtc)
- Dtc p0128 coolant thermostat (engine coolant temperature below thermostat regulating temperature)
- Dtc p0851 park/neutral switch input circuit low
- Dtc u0073 control module communication bus off
- Dtc u0423 invalid data received from instrument panel cluster control module
- Dtc u0416 invalid data received from vehicle dynamics control module
- Dtc u0402 invalid data received from tcm
- Dtc u0155 lost communication with instrument panel cluster (ipc) control module
- Dtc p2610 ecm/pcm engine off timer performance
- Dtc p2530 ignition switch run position circuit
- Dtc p2420 evap system switching valve control circuit high
- Dtc p2419 evap system switching valve control circuit low
- Dtc p2404 evap system leak detection pump sense circuit range/performance
- Dtc p2402 evap system leak detection pump control circuit high
- Dtc p2401 evap system leak detection pump control circuit low
- Dtc p2271 o2 sensor signal biased/stuck rich bank 1 sensor 2
- Dtc p2270 o2 sensor signal biased/stuck lean bank 1 sensor 2
- Dtc p2196 a/f /o2 sensor signal biased/stuck rich bank 1 sensor 1
- Dtc p2195 a/f /o2 sensor signal biased/stuck lean bank 1 sensor 1
- Dtc p2138 throttle/pedal position sensor/switch "d"/"e" voltage correlation
- Dtc p2135 throttle/pedal position sensor/switch "a"/"b" voltage correlation
- Dtc p2128 throttle/pedal position sensor/switch "e" circuit high
- Dtc p2127 throttle/pedal position sensor/switch "e" circuit low
- Dtc p2123 throttle/pedal position sensor/switch "d" circuit high
- Dtc p2122 throttle/pedal position sensor/switch "d" circuit low
- Dtc p2119 throttle actuator "a" control throttle body range/performance
- Dtc p2109 throttle/pedal position sensor "a" minimum stop performance
- Dtc p2103 throttle actuator "a" control motor circuit high
- Dtc p2102 throttle actuator "a" control motor circuit low
- Dtc p2101 throttle actuator "a" control motor circuit range/performance
- Dtc p2097 post catalyst fuel trim system too rich bank 1
- Dtc p2096 post catalyst fuel trim system too lean bank 1
- Dtc p2022 tgv position sensor/switch circuit high bank 2
- Dtc p2021 tgv position sensor/switch circuit low bank 2
- Dtc p2017 tgv position sensor/switch circuit high bank 1
- Dtc p2016 tgv position sensor/switch circuit low bank 1
- Dtc p2012 tgv control circuit low bank 2
- Dtc p2011 tgv control circuit/open bank 2
- Dtc p2009 tgv control circuit low bank 1
- Dtc p2008 tgv control circuit/open bank 1
- Dtc p2007 tgv control stuck closed bank 2
- Dtc p2006 tgv control stuck closed bank 1
- Dtc p2005 tgv control stuck open bank 2
- Dtc p2004 tgv control stuck open bank 1
- Dtc p1c00 battery monitor module "a" performance
- Dtc p1499 coil 4 egr "a" control circuit high
- Dtc p1498 coil 4 egr "a" control circuit low
- Dtc p1497 coil 3 egr "a" control circuit high
- Dtc p1496 coil 3 egr "a" control circuit low
- Dtc p1495 coil 2 egr "a" control circuit high
- Dtc p1494 coil 2 egr "a" control circuit low
- Dtc p1493 coil 1 egr "a" control circuit high
- Dtc p1492 coil 1 egr "a" control circuit low
- Dtc p1451 evap system clog detected (pipe)
- Dtc p1449 evap system clog detected (air filter)
- Dtc p1160 throttle return spring
- Dtc p081a starter disable circuit low
- Dtc p0700 transmission control system (mil request)
- Dtc p0685 ecm/pcm power relay control circuit/open
- Dtc p062f internal control module eeprom error
- Dtc p0617 starter relay "a" circuit high
- Dtc p0616 starter relay "a" circuit low
- Dtc p060b internal control module a/d processing performance
- Dtc p060a internal control module monitoring processor performance
- Dtc p0606 control module processor
- Dtc p0605 internal control module read only memory (rom) error
- Dtc p0604 internal control module random access memory (ram) error
- Dtc p0512 starter (switch) request circuit
- Dtc p050b cold start ignition timing performance
- Dtc p0507 idle control system rpm - higher than expected
- Dtc p0506 idle control system rpm - lower than expected
- Dtc p0500 vehicle speed sensor "a" circuit
- Dtc p0463 fuel level sensor "a" circuit high
- Dtc p0462 fuel level sensor "a" circuit low
- Dtc p0461 fuel level sensor "a" circuit range/performance
- Dtc p0459 evap system (cpc) purge control valve "a" circuit high
- Dtc p0458 evap system (cpc) purge control valve "a" circuit low
- Dtc p0456 evap system (cpc) leak detected (very small leak)
- Dtc p0455 evap system (cpc) leak detected (large leak)
- Dtc p0453 evap system (cpc) pressure sensor/switch circuit high
- Dtc p0452 evap system (cpc) pressure sensor/switch circuit low
- Dtc p0451 evap system (cpc) pressure sensor/switch circuit range/performance
- Dtc p0441 evap system (cpc) incorrect purge flow
- Dtc p0420 catalyst system efficiency below threshold bank 1
- Dtc p0400 egr "a" flow
- Dtc p0354 ignition coil "d" primary control circuit/open
- Dtc p0353 ignition coil "c" primary control circuit/open
- Dtc p0352 ignition coil "b" primary control circuit/open
- Dtc p0351 ignition coil "a" primary control circuit/open
- Dtc p0346 camshaft position sensor "a" circuit range/performance bank 2
- Dtc p0345 camshaft position sensor "a" circuit bank 2
- Dtc p0341 camshaft position sensor "a" circuit range/performance bank 1 or single sensor
- Dtc p0340 camshaft position sensor "a" circuit bank 1 or single sensor
- Dtc p0336 crankshaft position sensor "a" circuit range/performance
- Dtc p0335 crankshaft position sensor "a" circuit
- Dtc p0328 knock/combustion vibration sensor 1 circuit high bank 1 or single sensor
- Dtc p0327 knock/combustion vibration sensor 1 circuit low bank 1 or single sensor
- Dtc p0304 cylinder 4 misfire detected
- Dtc p0303 cylinder 3 misfire detected
- Dtc p0302 cylinder 2 misfire detected
- Dtc p0300 random/multiple cylinder misfire detected
- Dtc p0223 throttle/pedal position sensor/switch "b" circuit high
- Dtc p0222 throttle/pedal position sensor/switch "b" circuit low
- Dtc p0204 cylinder 4 injector "a" circuit
- Dtc p0203 cylinder 3 injector "a" circuit
- Dtc p0202 cylinder 2 injector "a" circuit
- Dtc p0201 cylinder 1 injector "a" circuit
- Dtc p0198 engine oil temperature sensor "a" circuit high
- Dtc p0197 engine oil temperature sensor "a" circuit low
- Dtc p0196 engine oil temperature sensor "a" range/performance
- Dtc p0172 system too rich bank 1
- Dtc p0171 system too lean bank 1
- Dtc p015b a/f / o2 sensor delayed response - lean to rich bank 1 sensor 1
- Dtc p015a a/f / o2 sensor delayed response - rich to lean bank 1 sensor 1
- Dtc p014d a/f / o2 sensor slow response - lean to rich bank 1 sensor 1
- Dtc p014c a/f / o2 sensor slow response - rich to lean bank 1 sensor 1
- Dtc p0141 o2 sensor heater circuit bank 1 sensor 2
- Dtc p013f o2 sensor delayed response - lean to rich bank 1 sensor 2
- Dtc p013e o2 sensor delayed response - rich to lean bank 1 sensor 2
- Dtc p013b o2 sensor slow response - lean to rich bank 1 sensor 2
- Dtc p013a o2 sensor slow response - rich to lean bank 1 sensor 2
- Dtc p0138 o2 sensor circuit high voltage bank 1 sensor 2
- Dtc p0137 o2 sensor circuit low voltage bank 1 sensor 2
- Dtc p0134 a/f / o2 sensor circuit no activity detected bank 1 sensor 1
- Dtc p0132 a/f / o2 sensor circuit high voltage bank 1 sensor 1
- Dtc p0131 a/f / o2 sensor circuit low voltage bank 1 sensor 1
- Dtc p0123 throttle/pedal position sensor/switch "a" circuit high
- Dtc p0122 throttle/pedal position sensor/switch "a" circuit low
- Dtc p0118 engine coolant temperature sensor 1 circuit high
- Dtc p0117 engine coolant temperature sensor 1 circuit low
- Dtc p0116 engine coolant temperature sensor 1 circuit range/performance
- Dtc p0113 intake air temperature sensor 1 circuit high bank 1
- Dtc p0112 intake air temperature sensor 1 circuit low bank 1
- Dtc p0111 intake air temperature sensor 1 circuit range/performance bank 1
- Dtc p0108 manifold absolute pressure/barometric pressure sensor circuit high
- Dtc p0107 manifold absolute pressure/barometric pressure sensor circuit low
- Dtc p0103 mass or volume air flow sensor "a" circuit high
- Dtc p0102 mass or volume air flow sensor "a" circuit low
- Dtc p0101 mass or volume air flow sensor "a" circuit range/performance
- Dtc p0073 ambient air temperature sensor circuit "a" high
- Dtc p0072 ambient air temperature sensor circuit "a" low
- Dtc p0071 ambient air temperature sensor circuit "a" range/performance
- Dtc p0068 map/maf - throttle position correlation
- Dtc p0038 a/f / o2 heater control circuit high bank 1 sensor 2
- Dtc p0037 a/f / o2 heater control circuit low bank 1 sensor 2
- Dtc p0032 a/f / o2 heater control circuit high bank 1 sensor 1
- Dtc p0031 a/f / o2 heater control circuit low bank 1 sensor 1
- Dtc p0030 a/f / o2 heater control circuit bank 1 sensor 1
- Dtc p0021 "a" camshaft position - timing over-advanced or system performance bank 2
- Dtc p0020 "a" camshaft position actuator control circuit/open bank 2
- Dtc p0018 crankshaft position - camshaft position correlation bank 2 sensor a
- Dtc p0016 crankshaft position - camshaft position correlation bank 1 sensor a
- Dtc p0011 "a" camshaft position - timing over-advanced or system performance bank 1
- Dtc p0010 "a" camshaft position actuator control circuit/open bank 1
- Dtc p000c "a" camshaft position slow response bank 2
- Dtc p000a "a" camshaft position slow response bank 1
- Dtc u0122 lost communication with vehicle dynamics control module
- Dtc p0560 system voltage
- Dtc p0125 insufficient coolant temperature for closed loop fuel control
- Dtc u0101 lost communication with tcm
- Dtc u1712 lost lin communication with battery "1" monitor module
- Dtc u0077 lin communication bus "ecm/pcm" off
- Dtc u0284 lost communication with active grille shutter module "a"
- Dtc p219f cylinder 4 air-fuel ratio imbalance
- Dtc p219e cylinder 3 air-fuel ratio imbalance
- Dtc p219d cylinder 2 air-fuel ratio imbalance
- Dtc p05c0 active grille air shutter module "a" over temperature
- Dtc p05a6 active grille air shutter "a" supply voltage circuit/open
- Dtc p05a2 active grille air shutter "a" control circuit/open
- Dtc p05a1 active grille air shutter "a" position sensor minimum/maximum stop performance
- Dtc p05a0 active grille air shutter "a" stuck on
- Dtc p059f active grille air shutter "a" performance/stuck off
- Dtc p059a active grille air shutter "a" position sensor circuit
- Dtc p0852 park/neutral switch input circuit high
- Diagnostics for engine starting failure
- Fuel injector circuit
- Check power supply and ground line of engine control module (ecm)
- Fuel pump circuit
- Ignition control system
- Procedure
- General description
- Malfunction indicator light
Disassembly
Using the ST or a hydraulic press, push out the bolt - hub (b) from the hub unit COMPL - rear axle (a).CAUTION:• Be careful not to hammer the bolts - hub. This may deform the hub unit COMPL.&bul ...
Active test operation
CAUTION:After executing the system operation check mode, execute the Clear Memory Mode Clear Memory Mode > OPERATION.NOTE:• *: After replacing ECM or active grille shutter, be sure to perform t ...
Other materials:
Inspection
1. CHECK FUSE1. Remove the fuse and inspect visually.2. If the fuse is blown out, replace the fuse.NOTE:If the fuse is blown again, check the system wiring harness.2. CHECK RELAY1. Measure the resistance between relay terminals.Terminal No.Inspection conditionsStandardCircuit1 — 2Always1 M- or mor ...
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