B1B57 fault code: what it means

B1B57: BYD: left front corner (parking) sensor circuit short or open.

Body · Keep an eye on

Usual causes, most likely first

1. failed corner sensor
2. wiring
3. bumper damage

B1B57 by make

What the repair usually costs

• Bumper scuff repair and respray (European, parking sensors)NZ$610–NZ$1,140 · A$660–A$1,200
• Bumper replace and paint (European, sensors or radar)NZ$2,270–NZ$5,340 · A$2,190–A$4,940
• Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510

Not sure what B1B57 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.