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P0032 fault code: what it means

P0032: Front air-fuel ratio sensor heater (bank 1) circuit high.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. failed front A/F sensor
  2. wiring or connector fault
  3. ECM fault (rare)

P0032 by make

Nissan

Front air-fuel ratio sensor heater (bank 1) circuit high.

Usual causes: failed front A/F sensor; wiring or connector fault; ECM fault (rare)

Not sure what P0032 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.