Check Engine Light Codes

P0011 Intake Camshaft Position Timing - Over-Advanced (Bank 1) P0021 Intake Camshaft Position Timing - Over-Advanced (Bank 2) P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)

A few more were found here
http://www.mainelysubarus.com/forums/showthread.php?103-Check-Engine-Light-Codes

P2097 Post Catalyst Fuel Trim Bank 1 System Too Rich

The following list started from a NASIOC post: \\

I’ve added a bunch more, but this list is probably still not complete. If you know of others, please add them. This is a wiki after all. Thanks!

Some people will guess anyway, but they are wasting your time. Unless…

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. Note that a blinking cruise control light doesn’t tell you anything about the problem that caused the CEL to come on. It’s just Subaru’s way of nagging you to get the problem fixed.

There are over 150 things that might have caused the light to come on, so don’t expect anyone to guess what caused yours to come on. Learning View is an excellent code reader, I highly recommend it.

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. There are over 150 things that might have caused the light to come on, so don’t expect anyone to guess what caused yours to come on. Learning View is an excellent code reader, I highly recommend it.

Some people will guess anyway, but they are wasting your time - unless perhaps…

• …you recently installed a downpipe or TBE, in which case you have these:

• …you left your reflashing connectors joined, in which case you have these:

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. There are over 150 things that might have caused the light to come on, so don’t expect anyone to guess what caused yours to come on. Some people will guess anyway, but they are wasting your time - unless you recently…

• …installed a downpipe or TBE, in which case you have
  • P0420 - your cat doesn’t work as well as it should
  • P0244 - you’re overboosting because you need a tune

• …left your reflashing connectors joined, in which case you have these:
  • P0500 - Vehicle Speed Sensor (VSS) not working properly
  • P1518 - Start Switch Circuit Low Input
  • P1590 - Neutral Position Circuit Switch High Input
  • P0131 - o2 Sensor Low Voltage (Bank 1 Sensor 1)
  • P0132 - o2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

P0441 Purge control solenoid valve busted

P0505 Idle Air Control System

P2443: Secondary Air Injection System Switching Valve Stuck Closed Bank 2

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. There are over 150 things that might have caused the light to come on, so don’t expect anyone to guess what caused yours to come on. Some people will guess anyway, but they are wasting your time - unless you recently installed a downpipe or TBE, in which case you have P0420 and P0244.

P1152 O2 Sensor Circuit Range/Performance (Low) Bank 1 Sensor 1 P1153 O2 Sensor Circuit Range/Performance (High) Bank 1 Sensor 1

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. There are at least 150 things that might have caused the light to come on, so don’t expect anyone to guess what caused yours to come on. Some people will guess anyway, but they are wasting your time - unless you recently installed a downpipe or TBE, in which case you have P0420 and P0244.

I’ve added several more, but this list is probably still not complete. If you know of others, please add them. This is a wiki after all. Thanks!

P1152 O2 Sensor Circuit Range/Performance (Low) Bank 1 Sensor 1 P1153 O2 Sensor Circuit Range/Performance (High) Bank 1 Sensor 1

P0502 Vehicle Speed Sensor Low P0503 Vehicle Speed Sensor High

P0852 Park/Neutral Switch Circuit High

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. If you do not know what the code is, nobody can help you. There are at least 150 things that might have caused the light to come on, so guessing the code will take a long time.

Learning View is an excellent code reader, I highly recommend it.

If your “Check Engine” light is on, you need to use a code reader to find out what codes caused the CEL to come on. Learning View is an excellent code reader, I highly recommend it.

Note that a blinking cruise control light doesn’t tell you anything about the problem that caused the CEL to come on. It’s just Subaru’s way of nagging you to get the problem fixed.

The following was copy-pasted from a NASIOC post: \\

[@

P1712 Engine torque control signal 2 circuit malfunction @]

Copy-pasted from a NASIOC post: http://forums.nasioc.com/forums/showpost.php?p=3191551&postcount=12

P0031 Front oxygen (A/F) sensor heater circuit low input P0032 Front oxygen (A/F) sensor heater circuit high input _ P0037 Rear oxygen sensor heater circuit malfunction P0038 Rear oxygen sensor heater circuit high input P0065 Air assist injector solenoid valve malfunction P0066 Air assist injector solenoid valve circuit low input P0067 Air assist injector solenoid valve circuit high input P0101 Mass air flow sensor circuit range/performance problem (high input) P0102 Mass air flow sensor circuit low input P0103 Mass air flow sensor circuit high input P0106 Pressure sensor circuit range/performance problem (low input) P0107 Pressure sensor circuit low input P0108 Pressure sensor circuit high input P0111 Intake air temperature sensor circuit range/performance problem P0112 Intake air temperature sensor circuit low input P0113 Intake air temperature sensor circuit high input P0117 Engine coolant temperature sensor circuit low input P0118 Engine coolant temperature sensor circuit high input P0121 Throttle position sensor circuit range/performance problem (high input) P0122 Throttle position sensor circuit low input P0123 Throttle position sensor circuit high input P0125 Insufficient coolant temperature for closed loop fuel control P0128 Thermostat malfunction P0130 Front oxygen (A/F) sensor circuit range/performance problem (lean) P0131 Front oxygen (A/F) sensor circuit range/performance problem (low input) P0132 Front oxygen (A/F) sensor circuit range/performance problem (high input) P0133 Front oxygen (A/F) sensor circuit slow response P0136 Rear oxygen sensor circuit malfunction P0139 Rear oxygen sensor circuit slow response P0171 Fuel trim malfunction (A/F too lean) P0172 Fuel trim malfunction (A/F too rich) P0181 Fuel temperature sensor A circuit range/performance problem P0182 Fuel temperature sensor A circuit low input P0183 Fuel temperature sensor A circuit high input P0244 Wastegate control solenoid valve malfunction (high input) P0245 Wastegate control solenoid valve circuit low input P0246 Wastegate control solenoid valve circuit high input P0301 Cylinder 1 misfire detected P0302 Cylinder 2 misfire detected P0303 Cylinder 3 misfire detected P0304 Cylinder 4 misfire detected P0327 Knock sensor circuit low input P0328 Knock sensor circuit high input P0335 Crankshaft position sensor circuit malfunction P0336 Crankshaft position sensor circuit range/performance problem P0340 Camshaft position sensor circuit malfunction P0341 Camshaft position sensor circuit range/performance problem P0420 Catalyst system efficiency below threshold P0442 Evaporative emission control system malfunction P0444 Evaporative emission control system purge control valve circuit low input P0445 Evaporative emission control system purge control valve circuit high input P0447 Evaporative emission control system vent control low input P0448 Evaporative emission control system vent control high input P0451 Evaporative emission control system pressure sensor range/performance problem P0452 Evaporative emission control system pressure sensor low input P0453 Evaporative emission control system pressure sensor high input P0456 Evaporative emission control system malfunction P0457 Evaporative emission control system leak detected (fuel cap loose/off) P0461 Fuel level sensor circuit range/performance problem P0462 Fuel level sensor circuit low input P0463 Fuel level sensor circuit high input P0464 Fuel level sensor intermittent input P0480 Cooling fan relay 1 circuit low input P0483 Cooling fan function problem P0500 Vehicle speed sensor malfunction P0506 Idle control system RPM lower than expected P0507 Idle control system RPM higher than expected P0508 Idle control system circuit low input P0509 Idle control system circuit high input P0512 Starter switch circuit high input P0545 Exhaust gas temperature sensor circuit low input P0546 Exhaust gas temperature sensor circuit high input P0604 Internal control module memory check sum error P0703 Brake switch input malfunction P0705 Transmission range sensor circuit malfunction P0710 Transmission fluid temperature sensor circuit malfunction P0715 Torque converter turbine speed sensor circuit malfunction P0720 Output speed sensor (vehicle speed sensor 2) circuit malfunction P0725 Engine speed input circuit malfunction P0731 Gear 1 incorrect ratio P0732 Gear 2 incorrect ratio P0733 Gear 3 incorrect ratio P0734 Gear 4 incorrect ratio P0741 Torque converter clutch system malfunction P0743 Torque converter clutch system (Lock-up duty solenoid) electrical P0748 Pressure control solenoid (Line pressure duty solenoid) electrical P0753 Shift solenoid A (Shift solenoid 1) electrical P0758 Shift solenoid B (Shift solenoid 2) electrical P0778 2–4 brake pressure control solenoid valve (2–4 brake duty solenoid) circuit malfunction P0785 2–4 brake timing control solenoid valve (2–4 brake timing solenoid) circuit malfunction P1086 Tumble generator valve #2 (LH) position sensor circuit low input P1087 Tumble generator valve #2 (LH) position sensor circuit high input P1088 Tumble generator valve #1 (RH) position sensor circuit low input P1089 Tumble generator valve #1 (RH) position sensor circuit high input P1090 Tumble generator valve #1 (RH) malfunction (stuck open) P1091 Tumble generator valve #1 (RH) malfunction (stuck close) P1092 Tumble generator valve #2 (LH) malfunction (stuck open) P1093 Tumble generator valve #2 (LH) malfunction (stuck close) P1094 Tumble generator valve circuit #1 (open circuit) P1095 Tumble generator valve circuit #1 (over current) P1096 Tumble generator valve circuit #2 (open circuit) P1097 Tumble generator valve circuit #2 (over current) P1110 Atmospheric pressure sensor low input P1111 Atmospheric pressure sensor high input P1112 Atmospheric pressure sensor range/performance problem P1130 Front oxygen sensor circuit malfunction (open circuit) P1131 Front oxygen sensor circuit malfunction (short circuit) P1134 Front oxygen (A/F) sensor microcomputer problem P1137 Front oxygen (A/F) sensor circuit range/performance problem P1139 Front oxygen (A/F) sensor #1 heater circuit performance/range problem P1141 Mass air flow sensor circuit range/performance problem (low input) P1142 Throttle position sensor circuit range/performance problem (low input) P1146 Pressure sensor circuit range/performance problem (high input) P1230 Fuel pump control unit malfunction P1244 Wastegate control solenoid valve malfunction (low input) P1245 Wastegate control solenoid valve malfunction (fail-safe) P1301 Fire due to increased exhaust temperature P1312 Exhaust temperature sensor malfunction P1400 Fuel tank pressure control solenoid valve circuit low input P1420 Fuel tank pressure control solenoid valve circuit high input P1443 Evaporative emission control system vent control function problem P1480 Cooling fan relay 1 circuit high input P1507 Idle control system malfunction (fail-safe) P1510 Idle air control solenoid valve signal 1 circuit low input P1511 Idle air control solenoid valve signal 1 circuit high input P1512 Idle air control solenoid valve signal 2 circuit low input P1513 Idle air control solenoid valve signal 2 circuit high input P1514 Idle air control solenoid valve signal 3 circuit low input P1515 Idle air control solenoid valve signal 3 circuit high input P1516 Idle air control solenoid valve signal 4 circuit low input P1517 Idle air control solenoid valve signal 4 circuit high input P1518 Starter switch circuit low input P1540 Vehicle speed sensor malfunction 2 P1544 High exhaust temperature detected P1560 Back-up voltage circuit malfunction P1590 Neutral position switch circuit high input P1591 Neutral position switch circuit low input P1592 Neutral position switch circuit (MT model) P1594 Automatic transmission diagnosis input signal circuit malfunction P1595 Automatic transmission diagnosis input signal circuit low input P1596 Automatic transmission diagnosis input signal circuit high input P1698 Engine torque control cut signal circuit low input P1699 Engine torque control cut signal circuit high input P1700 Throttle position sensor circuit malfunction for automatic transmission P1701 Cruise control set signal circuit malfunction for automatic transmission P1703 Low clutch timing control solenoid valve circuit malfunction P1711 Engine torque control signal 1 circuit malfunction P1712 Engine torque control signal 2 circuit malfunction