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.
2017 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
Engine Control System (Diagnostics) (2 Of 3)
- EFI system (FA20)
- DTC P0300 Random/Multiple Cylinder Misfire Detected; DTC P0301 Cylinder 1 Misfire Detected; DTC P0302 Cylinder 2 Misfire Detected; DTC P0303 Cylinder 3 Misfire Detected; DTC P0304 Cylinder 4 Misfire Detected
- DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor); DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor); DTC P0332 Knock Sensor 2 Circuit Low (Bank 2); DTC P0333 Knock Sensor 2 Circuit High (Bank 2)
- DTC P0335 Crankshaft Position Sensor "A" Circuit; DTC P0336 Crank angle sensor characteristic
- DTC P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor); DTC P0341 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1); DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0346 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)
- DTC P0351 Ignition Coil "A" Primary/Secondary Circuit; DTC P0352 Ignition Coil "B" Primary/Secondary Circuit; DTC P0353 Ignition Coil "C" Primary/Secondary Circuit; DTC P0354 Ignition Coil "D" Primary/Secondary Circuit
- DTC P0365 Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0366 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1); DTC P0390 Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0391 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 2)
- DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1)
- DTC P0441 Purge flow
- DTC P0451 ELCM evaporative emission control system pressure sensor performance; DTC P0452 ELCM evaporative emission control system pressure sensor (continuity LOW); DTC P0453 ELCM evaporative emission control system pressure sensor (continuity HIGH)
- DTC P0455 Evaporative emission control system leak detected (gross leak); DTC P0456 Evaporative Emission Control System Leak Detected (very small leak); DTC P1451 Fuel tank pressure sensor range/performance; DTC P2404 Evaporative emission system leak detection pump sense circuit range/performance
- DTC P0458 Evaporative Emission System Purge Control Valve Circuit Low; DTC P0459 Evaporative Emission System Purge Control Valve Circuit High
- DTC P2158 Vehicle Speed Sensor "A"
- DTC P0506 ISC valve characteristic {1} Low; DTC P0507 ISC valve characteristic {1} High
- DTC P050A Cold Start Idle Air Control System Performance; DTC P050B Cold start ignition timing abnormal
- DTC P0512 Starter Switch Circuit High input; DTC P0616 Starter Relay Circuit Low; DTC P0617 Starter Relay Circuit High; DTC P081A Starter cut relay system circuit (Low)
- DTC P0560 Backup Power Supply
- DTC P0604 Internal Control Module Random Access Memory (RAM) Error; DTC P0605 Internal Control Module Read Only Memory (ROM) Error; DTC P0606 Micro-computer (CPU Failure); DTC P060A Internal Control Module Monitoring Processor Performance; DTC P060B Internal Control Module A/D Processing Performance; DTC P062F EEPROM Error
- DTC P062D No. 1 Fuel Injector Driver Circuit Performance; DTC P1261 DI Injector Circuit/Open - (Cylinder 1); DTC P1262 DI Injector Circuit/Open - (Cylinder 2); DTC P1263 DI Injector Circuit/Open - (Cylinder 3); DTC P1264 DI Injector Circuit/Open - (Cylinder 4)
- DTC P0685 Main Relay ON Stuck
- DTC P0700 AT-MIL lighting request
- DTC P0851 Neutral switch circuit Low; DTC P0852 Neutral switch circuit High
Factory Service Tools
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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.
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