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.
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HOMESERVICE MANUALSSCION2015FR-S AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONDTC INDEXBRAKE CONTROL / DYNAMIC CONTROL SYSTEMS DTCSVEHICLE STABILITY CONTROL SYSTEM
2015 Scion FR-S Automatic Trans
Vehicle Stability Control System
2015 Scion FR-S Automatic TransSECTION Vehicle Stability Control System
VEHICLE STABILITY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1201 | Engine Control System Malfunction |
| C1225 | SA1 Solenoid Circuit |
| C1226 | SA2 Solenoid Circuit |
| C1227 | SA3 Solenoid Circuit |
| C1228 | STR Solenoid Circuit |
| C1231 | Steering Angle Sensor |
| C1234 | Yaw Rate Sensor |
| C1237 | Speed Sensor Rotor Faulty |
| C1241 | Low or High Power Supply Voltage |
| C1246*2 | Master Cylinder Pressure Sensor Malfunction |
| C1249 | Open in Stop Light Switch Circuit |
| C1288 | Error in Matching of ECUs |
| C1294 | ECT System Malfunction |
| C1300 | Skid Control ECU Malfunction |
| C1330 | Open in Front Speed Sensor RH |
| C1331 | Open in Front Speed Sensor LH |
| C1332 | Open in Rear Speed Sensor RH |
| C1333 | Open in Rear Speed Sensor LH |
| C1419 | Acceleration Sensor Internal Circuit |
| C1464*1 | Front Speed Sensor RH |
| C1465*1 | Front Speed Sensor LH |
| C1466*1 | Rear Speed Sensor RH |
| C1467*1 | Rear Speed Sensor LH |
| C1468 | SFR Solenoid Circuit |
| C1469 | SFL Solenoid Circuit |
| C146A | SRR Solenoid Circuit |
| C146B | SRL Solenoid Circuit |
| C146C*1 | Open in ABS Motor Relay Circuit |
| C146E | Open in ABS Solenoid Relay Circuit |
| C1472 | Acceleration Sensor |
| C1474 | Forward and Rearward G Sensor |
| U0073 | Control Module Communication Bus "A" Off |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0101 | Lost Communication with TCM |
| U0126 | Lost Communication with Steering Angle Sensor Module |
VEHICLE STABILITY CONTROL SYSTEM TEST MODE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
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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.