For 1990-2009 cars

The powertrain control module (PCM) has the ability to set a diagnostic trouble code (DTC) if the engine stalls when the ignition has not been turned OFF. This DTC may aid in intermittent diagnosis of a customer complaint of intermittent engine stall. The scan tool Failure Record information can be duplicated under the same stall conditions in an attempt to reproduce the occurrence. Since DTC P1599 is a type D DTC, the PCM will not command the malfunction indicator lamp (MIL) or SERVICE telltale On. This DTC can set due to driver error. For example, a vehicle equipped with a manual transaxle in which the clutch was released too quickly causing the engine to stall, will set DTC P1599.

### DTC Parameters

DTC P1599 will set if the PCM has detected an engine stall condition when:

• | The engine is in run mode.

• | The ignition voltage is present on circuit 439.

• | The crankshaft position (CKP) pulses at the PCM are NOT detected.

DTC P1599 is a type D DTC.

### Diagnostic Aids

If other DTCs are present, especially DTC P0336, diagnose those DTCs first.

Verify driver did not induce the stall condition.

Use a scan tool Failure Record to attempt to reproduce the condition if the engine stall is a complaint.