P3019 fault code: what it means

P3019: Hybrid battery block 9 is weak: its voltage is out of line with the other blocks. Points to the modules in that block failing.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

weak hybrid battery modules in that block
corroded bus bar or sense-wire terminal on that block
overall pack ageing (other blocks usually close behind)

P3019 by make

Lexus

Hybrid battery block 9 is weak: its voltage is out of line with the other blocks. Points to the modules in that block failing.

Usual causes: weak hybrid battery modules in that block; corroded bus bar or sense-wire terminal on that block; overall pack ageing (other blocks usually close behind)

Toyota

Hybrid battery block 9 is weak: its voltage is out of line with the other blocks. Points to the modules in that block failing.

Usual causes: weak hybrid battery modules in that block; corroded bus bar or sense-wire terminal on that block; overall pack ageing (other blocks usually close behind)

What the repair usually costs

Hybrid battery reconditioned exchange (Aqua / Prius C / Axio / Fielder)NZ$1,360–NZ$2,430 · A$1,390–A$2,370
Hybrid battery reconditioned exchange (Prius 20 / 30 / Prius alpha / Prius V)NZ$1,640–NZ$2,790 · A$1,880–A$3,550
Hybrid battery reconditioned exchange (Camry / Estima / Lexus / RAV4)NZ$2,140–NZ$4,150 · A$2,650–A$5,000
Hybrid battery new aftermarket (Aqua / Prius C)NZ$2,080–NZ$3,010 · A$2,350–A$3,610

Not sure what P3019 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.