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.
2018 Toyota Prius Two EcoFACTORY OEM SERVICE PROCEDURE
Meter / Gauge System
METER / GAUGE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [11/2015 - 08/2016]
| DTC Code | Description |
|---|---|
| B1500 | Fuel Sender Open Detected |
| B1503 | Exhaust Heat Management Warning Detected |
| B1507 | Open in Turn Signal Circuit |
| B1508 | Short in Turn Signal / Hazard Flasher Circuit |
| B150A | Lost Communication with HMI-LAN |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
| U0163 | Lost Communication with Navigation Control Module |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
| U1104 | Lost Communication with Driving Support ECU |
METER / GAUGE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2016 - 12/2018]
| DTC Code | Description |
|---|---|
| B1500 | Fuel Sender Open Detected |
| B1503 | Exhaust Heat Management Warning Detected |
| B1507 | Open in Turn Signal Circuit |
| B1508 | Short in Turn Signal / Hazard Flasher Circuit |
| B150A | Lost Communication with HMI-LAN |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
| U0163 | Lost Communication with Navigation Control Module |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
| U1104 | Lost Communication with Driving Support ECU |
METER / GAUGE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [12/2018 - 08/2019]
| DTC Code | Description |
|---|---|
| B1500 | Fuel Sender Open Detected |
| B1503 | Exhaust Heat Management Warning Detected |
| B1507 | Open in Turn Signal Circuit |
| B1508 | Short in Turn Signal / Hazard Flasher Circuit |
| B150A | Lost Communication with HMI-LAN |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
| U0163 | Lost Communication with Navigation Control Module |
| U0182 | Lost Communication with Lighting Control Module Front |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
| U1104 | Lost Communication with Driving Support ECU |
METER / GAUGE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [08/2019 - 07/2020]
| DTC Code | Description |
|---|---|
| B1500 | Fuel Sender Open Detected |
| B1503 | Exhaust Heat Management Warning Detected |
| B1507 | Open in Turn Signal Circuit |
| B1508 | Short in Turn Signal / Hazard Flasher Circuit |
| B150A | Lost Communication with HMI-LAN |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
| U0163 | Lost Communication with Navigation Control Module |
| U0182 | Lost Communication with Lighting Control Module Front |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
| U1104 | Lost Communication with Driving Support ECU |
METER / GAUGE SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [07/2020 - ]
| DTC Code | Description |
|---|---|
| B1500 | Fuel Sender Open Detected |
| B1503 | Exhaust Heat Management Warning Detected |
| B1507 | Open in Turn Signal Circuit |
| B1508 | Short in Turn Signal / Hazard Flasher Circuit |
| B150A | Lost Communication with HMI-LAN |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
| U0131 | Lost Communication with Power Steering Control Module |
| U0142 | Lost Communication with Body Control Module "B" |
| U0151 | Lost Communication with Restraints Control Module |
| U0163 | Lost Communication with Navigation Control Module |
| U0182 | Lost Communication with Lighting Control Module Front |
| U023A | Lost Communication with Front Camera Module |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
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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