Conditions for Running the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
P0050 or P0056
- The ignition 1 signal parameter is between 11-18 volts.
- The engine speed is more than 400 RPM.
- DTCs 0050 or P0056 run once per drive cycle when the above conditions are met.
P0059 or P0060
- DTCs P0112, P0113, P0117, P0118 are not set.
- The engine is started.
- The ignition voltage is less than 18 volts.
- The ignition is OFF form more than 10 hours.
- The Engine Coolant Temperature (ECT) Sensor parameter is between -30 and +45°C (-22 and +113°F) at engine start-up.
- The Engine Coolant Temperature (ECT) Sensor parameter minus the Intake Air Temperature (IAT) Sensor parameter is less than 8°C (14°F) at engine start-up.
- DTCs P0059 or P0060 run once per drive cycle when the above conditions are met.
P0155
- DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
- The ECT Sensor parameter is more than 50°C (122°F).
- The Ignition 1 Signal parameter is between 10-18 volts.
- The MAF Sensor parameter is between 3-40 g/s.
- The Engine Run Time parameter is more than 300 seconds.
- The Engine Speed parameter is between 500-3,000 RPM.
- DTC P0155 runs the heater current test once per drive cycle when the above conditions are met for 120 seconds.
P0161
- DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
- The ECT Sensor parameter is more than 50°C (122°F).
- The Ignition 1 Signal parameter is between 10-18 volts.
- The MAF Sensor parameter is between 3-40 g/s.
- The Engine Run Time parameter is more than 300 seconds.
- The Engine Speed parameter is between 500-3,000 RPM.
- DTC P0161 runs the heater current test twice per drive cycle when the above conditions are met for 120 seconds.