Why is the p219a Bank 1 OBD code intermittent?
The code may actually be more difficult to diagnose if the PCM enters readiness mode at this point, because the code is intermittent. The condition which caused the P219A to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, continue with the diagnosis.
What to do if your engine code is p219a?
If the engine is running smoothly and the code P219A/P219B continues to be reset, start the engine and allow it to reach normal operating temperature. Allow the engine to idle (with the transmission in neutral or park). With the scanner connected to the vehicle diagnostic port, observe oxygen sensor input data on the data stream.
Do you need diagnostic scanner for p219a bank?
If it is determined that either a rich or lean condition exists (with the engine), this must be repaired as it may be the cause of the P219A being stored. You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information in order to accurately diagnose a code P219A.
If the engine is running smoothly and the code P219A/P219B continues to be reset, start the engine and allow it to reach normal operating temperature. Allow the engine to idle (with the transmission in neutral or park). With the scanner connected to the vehicle diagnostic port, observe oxygen sensor input data on the data stream.
The code may actually be more difficult to diagnose if the PCM enters readiness mode at this point, because the code is intermittent. The condition which caused the P219A to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, continue with the diagnosis.
What does it mean when a code p219b is stored?
When a code P219B is stored, it means that the powertrain control module (PCM) has detected an air to fuel ratio imbalance for the bank of the engine which does not contain the number one cylinder.
When to use p219b for fuel ratio imbalance?
If the PCM detects an imbalance in the air to fuel ratio for a particular bank of the engine, a code P219B will be stored and a malfunction indicator lamp (MIL) may be illuminated. Most vehicles will require multiple ignition cycles (with a failure) for MIL illumination.