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Volvo engine code DTC P226C
Boost Pressure: Slow Response This OBD monitor is designed to detect conditions where the boost system is slow to respond, indicating degradation in the boost system. The monitor defines a low boost and a high boost window based on appropriate engine operating conditions. When the engine is being operated in the low window, boost pressure is sampled continuously. When operating conditions move out of the low window, the last boost pressure value is retained. At the instant the engine enters the high-speed evaluation window, an evaluation timer is started. When the timer expires, the current boost pressure is compared to the retained value from the low boost window. If the difference does not meet or exceed the calibration target, the boost pressure slow response malfunction is detected. P226C Boost Pressure Slow Response DTC P226C Component / System Boost Pressure - Slow Response Monitor Strategy Description Comparison of boost pressures in low/high windows to verify pressures are met. Fault Limit Delta = Low pressure window - high pressure window < 5 kPa Enable Conditions Low Pressure Window • Engine Speed 400 - 1600 RPM • Engine Torque 0 - 1000 Nm • Ambient Air Temperature -8 - 55 °C • Barometric Pressure 75 - 105 kPa • Coolant Temperature > 65 °C High Pressure Window • Engine Speed 1000 - 1800 RPM • Ambient Air Temperature -8 - 55 °C • Barometric Pressure 75 - 105 kPa • Coolant Temperature > 65 °C Disable Conditions No Active DTC's: • None Time Required For DTC To Be Set 5 seconds MIL Illumination 2 Drive Cycles