Subaru Legacy BN/BS (2015-2019) Service Manual: Engine (diagnostics)(h6do)
Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do)
- 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 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 p0391 camshaft position sensor "b" circuit range/performance bank 2
- Dtc p0390 camshaft position sensor "b" circuit bank 2
- Dtc p0366 camshaft position sensor "b" circuit range/performance bank 1
- Dtc p0365 camshaft position sensor "b" circuit bank 1
- 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 p0333 knock/combustion vibration sensor 2 circuit high bank 2
- Dtc p0332 knock/combustion vibration sensor 2 circuit low bank 2
- 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 p0230 fuel pump primary circuit
- 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 p0024 "b" camshaft position - timing over-advanced or system performance bank 2
- Dtc p0023 "b" camshaft position actuator control circuit/open bank 2
- 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 p0019 crankshaft position - camshaft position correlation bank 2 sensor b
- Dtc p0018 crankshaft position - camshaft position correlation bank 2 sensor a
- Dtc p0017 crankshaft position - camshaft position correlation bank 1 sensor b
- Dtc p0016 crankshaft position - camshaft position correlation bank 1 sensor a
- Dtc p0014 "b" camshaft position - timing over-advanced or system performance bank 1
- Dtc p0013 "b" camshaft position actuator control circuit/open bank 1
- 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 p000d "b" camshaft position slow response bank 2
- Dtc p000c "a" camshaft position slow response bank 2
- Dtc p000b "b" camshaft position slow response bank 1
- Dtc p000a "a" camshaft position slow response bank 1
- Dtc u0122 lost communication with vehicle dynamics control module
- 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 p2273 o2 sensor signal biased/stuck rich bank 2 sensor 2
- Dtc p2272 o2 sensor signal biased/stuck lean bank 2 sensor 2
- Dtc p2198 a/f / o2 sensor signal biased/stuck rich bank 2 sensor 1
- Dtc p2197 a/f / o2 sensor signal biased/stuck lean bank 2 sensor 1
- Dtc p2099 post catalyst fuel trim system too rich bank 2
- Dtc p2098 post catalyst fuel trim system too lean bank 2
- Dtc p0430 catalyst system efficiency below threshold bank 2
- Dtc p0356 ignition coil "f" primary control circuit/open
- Dtc p0355 ignition coil "e" primary control circuit/open
- Dtc p0306 cylinder 6 misfire detected
- Dtc p0305 cylinder 5 misfire detected
- Dtc p0206 cylinder 6 injector "a" circuit
- Dtc p0205 cylinder 5 injector "a" circuit
- Dtc p0175 system too rich bank 2
- Dtc p0174 system too lean bank 2
- Dtc p0161 o2 sensor heater circuit bank 2 sensor 2
- Dtc p015d a/f / o2 sensor delayed response - lean to rich bank 2 sensor 1
- Dtc p015c a/f / o2 sensor delayed response - rich to lean bank 2 sensor 1
- Dtc p0158 o2 sensor circuit high voltage bank 2 sensor 2
- Dtc p0157 o2 sensor circuit low voltage bank 2 sensor 2
- Dtc p0154 a/f / o2 sensor circuit no activity detected bank 2 sensor 1
- Dtc p0152 a/f / o2 sensor circuit high voltage bank 2 sensor 1
- Dtc p0151 a/f / o2 sensor circuit low voltage bank 2 sensor 1
- Dtc p014f a/f / o2 sensor slow response - lean to rich bank 2 sensor 1
- Dtc p014e a/f / o2 sensor slow response - rich to lean bank 2 sensor 1
- Dtc p014b o2 sensor delayed response - lean to rich bank 2 sensor 2
- Dtc p014a o2 sensor delayed response - rich to lean bank 2 sensor 2
- Dtc p013d o2 sensor slow response - lean to rich bank 2 sensor 2
- Dtc p013c o2 sensor slow response - rich to lean bank 2 sensor 2
- Dtc p0058 a/f / o2 heater control circuit low bank 2 sensor 2
- Dtc p0057 a/f / o2 heater control circuit low bank 2 sensor 2
- Dtc p0052 a/f / o2 heater control circuit high bank 2 sensor 1
- Dtc p0051 a/f / o2 heater control circuit low bank 2 sensor 1
- Dtc p0050 a/f / o2 heater control circuit bank 2 sensor 1
- Dtc p0560 system voltage
- 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
Activation of malfunction indicator light
1. When the ignition switch is turned to ON (engine OFF), the malfunction indicator light (A) in the combination meter illuminates.NOTE:If the malfunction indicator light does not illuminate, perform ...
Active test operation
CAUTION:After executing the system operation check mode, execute the Clear Memory Mode. Clear Memory Mode > OPERATIONNOTE:For detailed operation procedures, refer to “Application help”.*: ...
Other materials:
Fuel system trouble in general inspection
TroublePossible causeCorrective actionInsufficient fuel supply to fuel injectora. Fuel pump does not operate. Defective terminal contactInspect contact, especially ground, and tighten it securely. Trouble in electromagnetic or electronic circuit partsReplace the faulty parts.b. Decline of fue ...
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