What does code P1570 mean?

Q: What does code P1570 mean?

IMRC Circuit High. P1570 on a Mazda means the powertrain control module (PCM) has detected an abnormally high voltage on the intake manifold runner control (IMRC) circuit, indicating an open circuit, a short to voltage, or a failed IMRC actuator. The IMRC system uses a motor-driven flap in the intake manifold to change runner length for better low-end torque and high-rpm power, and a high-voltage reading tells the PCM the actuator is not responding as commanded.

DTC codes / Mazda codes / P1570

P1570 · MazdaIMRC Circuit High

P1570 on a Mazda means the powertrain control module (PCM) has detected an abnormally high voltage on the intake manifold runner control (IMRC) circuit, indicating an open circuit, a short to voltage, or a failed IMRC actuator. The IMRC system uses a motor-driven flap in the intake manifold to change runner length for better low-end torque and high-rpm power, and a high-voltage reading tells the PCM the actuator is not responding as commanded.

SystemPowertrain

Code typeMazda specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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