DTC P1487: EGR Boost Sensor Circuit Malfunction: Condition

NOTE: Wire color changes at X-03 harness connector between EGR boost sensor harness connector terminal "A" (White/Red wire) and main relay harness connector terminal "D" (Yellow wire).

DTC is set when PCM detects less than 2.7 volts at terminal No. 47 when ignition is turned on. Possible causes are:

EGR boost sensor malfunction.
Connector or terminal problem.
Open or short in Gray/Black wire between EGR boost sensor harness connector terminal "B" and PCM harness connector terminal No. 47.
Open in wiring between EGR boost sensor harness connector terminal "A" and main relay harness connector terminal "D".
PCM malfunction.