Possible Causes

Possible causes are:

• Connector or terminal malfunction
• EGR boost sensor malfunction
• Open circuit in Pink wire between EGR boost sensor 3-pin harness connector terminal "A" and PCM 104-pin harness connector terminal No. 34
• Open circuit in Red/Black wire between EGR boost sensor 3-pin harness connector terminal "C" and PCM 104-pin harness connector terminal No. 90
• PCM malfunction
• Short to ground circuit in Pink wire between EGR boost sensor 3-pin harness connector terminal "A" and PCM 104-pin harness connector terminal No. 34