Conditions for Running the DTC
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Heater Resistance Test:
- DTCs P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0125, P0128, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0300-P0306, P0315, P0336, P0442, P0446, P0452, P0453, P0455, P0483, P0496, P0506, P0507, P0601, P0602, P0604, P0606, P0641, P0651, P1516, P1621, P1680, P1681, P2101, P2120, P2125, P2135, P2138, P2176 are not set.
- The ECT Sensor parameter has dropped more than 60°C (140°F) since engine shut down.
- The ECT Sensor parameter is between -20 to +40°C (-4 to +104°F) at engine start-up.
- The ECT Sensor parameter minus the IAT Sensor parameter is less than 140°C (284°F) at engine start-up.
- The engine is started.
OR
Heater Current Test:
- DTCs P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0125, P0128, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0300-P0306, P0315, P0336, P0442, P0446, P0452, P0453, P0455, P0483, P0496, P0506, P0507, P0601, P0602, P0604, P0606, P0641, P0651, P1516, P1621, P1680, P1681, P2101, P2120, P2125, P2135, P2138, P2176 are not set.
- The ECT sensor parameter is more than 70°C (158°F).
- The Ignition 1 Signal parameter is between 10-17 volts.
- The Air Flow Calculated parameter is less than 50 g/s.
- The Fuel Level Sensor parameter is more than 10 percent.
- The Engine Run Time parameter is more than 60 seconds.