Conditions for Running the DTC
WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
P0121
- Before the ECM can report that DTC P0121 failed, DTCs P00F4, P00F5, P0112, P0113, P0117, and P0118 must run and pass.
- DTCs P00F4, P00F5, P00F6, P0101, P0102, P0103, P010B, P010C, P010D, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0117, P0118, P0119, P0236, P0237, P0238, P0335, P0336, P222B, P222C, P222D, P222E, P2227, P2228, P2229, or P2230 is not set.
- The engine speed is between 425-6,500 RPM.
- The engine coolant temperature (ECT) is -7 to +126°C (19-259°F).
- The intake air temperature (IAT) is -20 to +125°C (-4 to +257°F).
- The DTC P0121 runs continuously when the above conditions are met.
P0122, P0123, P0222, P0223
- DTC P06A3 is not set.
- The run/crank or powertrain relay voltage is greater than 6.41 V and reduced power is not active.
- The DTCs P0122, P0123, P0222, P0223 run continuously when the above condition are met.
P16A0, P16A1, or P16A2
- DTC P06A3 is not set.
- The run/crank voltage is greater than 6.41 V.
- DTCs P16A0, P16A1, and P16A2 run continuously once the above conditions are met.
P2135
- DTCs P0122, P0123, P0222, P0223, or P06A3 are not set.
- The run/crank or powertrain relay voltage is greater than 6.41 V and reduced power is not active.
- DTC P2135 runs continuously when the above conditions are met.