Conditions for Setting the DTC: Notes
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
P0340
- The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 seconds without a CMP sensor pulse.
OR
- The ECM detects that the engine has started, but did not received a CMP sensor pulse during the first engine revolution.
OR
- The ECM detects that the engine is running, but does not receive a CMP sensor pulse for 800 of 1000 engine cycles.
IMPORTANT:
The ECM detects engine movement by sensing the airflow through the MAF sensor is more than 3 g/s, or by sensing CKP sensor pulses.
P0341
- The ECM detects that the engine has started, but has received either of the following during the first engine revolution:
- Less than or more than 4 CMP sensor pulses, if equipped with an automatic transmission
- less than 4 or more than 6 CMP sensor pulses, if equipped with a manual transmission
OR
- The ECM detects that the engine is running, but receives less than 397 CMP or more than 403 CMP sensor pulses per 100 engine cycles in 800 of 1000 engine cycles.
IMPORTANT:
The ECM detects engine movement by sensing the airflow through the mass air flow (MAF) sensor is more than 3 g/s, or by sensing crankshaft position (CKP) sensor pulses.