What does code P1694 mean?

Q: What does code P1694 mean?

Turbo Charge Relief Circuit. P1694 on Mazda vehicles indicates that the powertrain control module (PCM) has detected an abnormal condition in the turbocharger relief circuit, which typically controls a bypass or blow-off valve to regulate boost pressure. The PCM monitors the circuit for expected voltage or resistance and sets this code when the signal falls outside the programmed range, often due to an open, short, or faulty component.

DTC codes / Mazda codes / P1694

P1694 · MazdaTurbo Charge Relief Circuit

P1694 on Mazda vehicles indicates that the powertrain control module (PCM) has detected an abnormal condition in the turbocharger relief circuit, which typically controls a bypass or blow-off valve to regulate boost pressure. The PCM monitors the circuit for expected voltage or resistance and sets this code when the signal falls outside the programmed range, often due to an open, short, or faulty component.

SystemPowertrain

Code typeMazda specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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