What does code P1236 mean?

Q: What does code P1236 mean?

Fuel Pump Control Out Range. P1236 on Mazda vehicles means the powertrain control module (PCM) has detected that the fuel pump control circuit is operating outside its expected range, typically because the feedback signal from the fuel pump control module does not match the commanded duty cycle. The PCM monitors the circuit for opens, shorts, or abnormal current draw and sets this code when the actual fuel pump speed or current falls outside the calibrated window.

DTC codes / Mazda codes / P1236

P1236 · MazdaFuel Pump Control Out Range

P1236 on Mazda vehicles means the powertrain control module (PCM) has detected that the fuel pump control circuit is operating outside its expected range, typically because the feedback signal from the fuel pump control module does not match the commanded duty cycle. The PCM monitors the circuit for opens, shorts, or abnormal current draw and sets this code when the actual fuel pump speed or current falls outside the calibrated window.

SystemPowertrain

Code typeMazda specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for Mazda vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.