B2190 fault code: what it means

B2190: NATS antenna amplifier fault: the key ring antenna cannot read the key chip. No-start or intermittent start.

Body · Costly if missed

Usual causes, most likely first

NATS antenna amp (around the ignition barrel)
wiring or connector fault
key transponder fault

B2190 by make

Nissan

NATS antenna amplifier fault: the key ring antenna cannot read the key chip. No-start or intermittent start.

Usual causes: NATS antenna amp (around the ignition barrel); wiring or connector fault; key transponder fault

What the repair usually costs

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

Not sure what B2190 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.