Diagnostic Aids

Code P1530 sets when signal voltage falls outside normal possible range of sensor and is not due to a refrigerant system problem. If problem is intermittent, check for opens or shorts in harness, or poor connections.

Fig 1: Code P1530 Schematic (3.1L) A/C Refrigerant Pressure

Fig 2: Code P1530 Flow Chart (3.1L) A/C Refrigerant Pressure