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) (3 Of 3)
- EFI system (FA20)
- DTC P1109 Detected Throttle Deposit; DTC P2109 Throttle angle sensor Closed position error
- DTC P1160 Return Spring Failure; DTC P2119 Throttle Control Circuit Range/Performance Problem
- DTC P119E Air-Fuel Ratio Imbalance for Port Injection (Bank1 fluctuation engine speed); DTC P119F Air-Fuel Ratio Imbalance for Direct Injection (Bank1 fluctuation engine speed); DTC P219A Air-Fuel Ratio Imbalance (Bank 1)
- DTC P1235 High-pressure fuel pump abnormal
- DTC P1449 Vent control filter clogging
- DTC P1603 Engine Stall History
- DTC P1604 Startability Malfunction
- DTC P2096 Sub FB correction amount 1 lean; DTC P2097 Sub FB correction amount 1 rich
- DTC P2101 ETC motor drive circuit; DTC P2102 ETC motor relay power supply normally OFF; DTC P2103 ETC motor relay power supply normally ON
- DTC P2122 Main accelerator pedal position sensor Low; DTC P2123 Main accelerator pedal position sensor High; DTC P2127 Sub-accelerator position sensor Low; DTC P2128 Sub-accelerator position sensor High; DTC P2138 Accelerator pedal position sensor characteristic
- DTC P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1); DTC P2196 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1)
- DTC P2270 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 2)
- DTC P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2)
- DTC P2401 Evaporative Emission Leak Detection Pump Stuck OFF; DTC P2402 Evaporative Emission Leak Detection Pump Stuck ON; DTC P2419 Evaporate Emission System Switching Valve Control Circuit Low; DTC P2420 Evaporate Emission System Switching Valve Control Circuit High
- DTC P2530 Ignition SW circuit
- DTC P2610 Soak timer IC error
- DTC U0073 Control Module Communication Bus "A" Off; DTC U0101 Lost Communication With TCM; DTC U0122 Lost Communication With Vehicle Dynamics Control Module; DTC U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0402 Invalid Data Received From TCM; DTC U0416 Invalid Data Received From Vehicle Dynamics Control Module; DTC U0423 Invalid Data Received From Instrument Panel Cluster Control Module
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.