C1237Brake pressure sensor signal implausible

• Hyundai/Kia code · ABS / stability control
• Lights a warning lamp

How the car detects it

The brake-pressure reading doesn't match what the unit expects, for example pressure without the pedal pressed. ESC is switched off. Often appears together with C1513 (brake light switch).

What you may notice

• ABS and ESC warning lights

Likely causes

• PossiblePressure sensor
• PossibleBrake light switch out of adjustment

Sources

• youcanic.com › hyundai-fault-code-dtc
• carmanualshub.com › kia-diagnostic-trouble-codes
• 2carpros.com › abs-esc-light

Backed by at least two independent sources.

From Obdaryn's Hyundai/Kia pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.