P065A fault code: what it means

P065A: Generator (alternator) system performance. Listed for 2021 JL Wrangler; battery light may show. Test charging output.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

alternator
battery sensor
wiring/belt
PCM software

P065A by make

Jeep

Generator (alternator) system performance. Listed for 2021 JL Wrangler; battery light may show. Test charging output.

Usual causes: alternator; battery sensor; wiring/belt; PCM software

What the repair usually costs

Alternator replace (small / medium car, petrol)NZ$510–NZ$1,020 · A$480–A$1,000
Alternator replace (SUV / ute / diesel)NZ$750–NZ$1,560 · A$710–A$1,490
Alternator replace (European, smart charging)NZ$930–NZ$2,130 · A$850–A$1,990

Not sure what P065A 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.