Heated Windshield Input Short to Ground
The heated windshield circuit is shorted to ground, meaning the electrical wire is touching metal or a ground point when it shouldn't. It's like a light switch with a broken wire that's touching the metal frame instead of properly controlling the circuit.
The ECU monitors the voltage signal from the heated windshield relay input circuit. It expects a specific voltage range when the system is commanded on or off. A short to ground causes the voltage to drop to 0V or near-ground potential, triggering a fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Input Voltage | 5V to 12V (depending on state) | Below 0.5V or ground potential |
| Circuit Resistance | Above 10 kΩ to ground | Below 1 kΩ to ground |
Code B2113 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B2113 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.