B1A35 fault code: what it means

B1A35: Immobiliser transponder read error. Key not read: no start.

Body · Costly if missed

Usual causes, most likely first

1. ignition key transponder
2. WCM / antenna fault
3. interference from another key

B1A35 by make

What the repair usually costs

• Crankshaft or camshaft position sensor replaceNZ$100–NZ$590 · A$100–A$580

Not sure what B1A35 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.