The actual fuel rail pressure is 3,600 kPa (522 psi) greater than the desired fuel rail pressure. The condition exists for greater than 5 s. The actual fuel rail pressure is 1,500 kPa (218 psi) less than the desired fuel pressure. The ECM detects that the fuel pressure is not rising or has fallen beyond acceptable limits during engine cranking. The high pressure fuel pump actuator command necessary to maintain the desired fuel rail pressure is +/-2,500 kPa (363 psi) of the command expected by the controller. * The DTC runs once for each engine start. * The low side fuel pressure is more than 0 kPa (0 psi). * The engine coolant temperature is between -100 and +65☌ (-148 and +149☏). * The DTCs run continuously when the above conditions are met for 5 s. * The engine speed is greater than 25 RPM.
* The deceleration fuel cut-off (DFCO) is inactive. * The ignition voltage is less than 18 V.
The ECM monitors the fuel rail fuel pressure sensor and the high pressure fuel pump actuator to determine if the commanded and actual pressure are within a predetermined range, or if the amount of fuel pressure correction exceeds a calibrated pressure. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the high pressure fuel pump actuator with the position of each of the camshaft lobes. The high pressure mechanical fuel pump is driven by three lobes on the camshaft.
#P0011 CHEVY EQUINOX 2013 DRIVER#
When activated, the high control circuit driver energizes the high pressure fuel pump actuator and the low control circuit driver pulse-width modulates (PWM) the low control circuit to ground.
#P0011 CHEVY EQUINOX 2013 DRIVERS#
When deactivated, both drivers are disabled. Both circuits are controlled through output drivers within the ECM. The ECM provides a voltage on the actuator high control circuit and ground on the actuator low control circuit. The high pressure fuel pump actuator is a solenoid valve. High pressure fuel is regulated by the high pressure fuel pump actuator, which is a part of the high pressure fuel pump. The ECM receives a varying signal voltage on the signal circuit. The engine control module (ECM) provides a 5 V reference voltage on the 5 V reference circuit and ground on the low reference circuit. The fuel rail pressure sensor detects fuel pressure within the fuel rail. Fuel Pressure Regulator 1 Control Performance - High Pressure Fuel Pressure Regulator 1 Control Performance - Low Pressure Fuel Rail Pressure Low During Engine Cranking
I would look into your fuel pressure sensor.
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