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EGR Backpressure Transducer: Testing and Inspection

P0400 EGR Function (Close)

1. Plug one of two ports of EGRC-BPT valve.
2. Vacuum from the other port and check for leakage while applying a pressure above 0.981 kPa (100 mmH(2)O, 3.94 inH(2)O) from under EGRC-BPT valve.
3. If a leakage is noted, replace the valve.

P0402 EGRC-BPT Valve Function

1. Plug one of two ports of EGRC-BPT valve.
2. Vacuum from the other port and check leakage without applying any pressure from under EGR-BPT valve.
Leakage should exist.

P1402 EGR FUNCTION (OPEN)

1. Plug one of two ports of EGRC-BPT valve.
2. Vacuum from the other port and check for leakage while applying a pressure above 0.981 kPa (100 mmH(2)O, 3.94 inH(2)O) from under EGRC-BPT valve.
3. If a leakage is noted, replace the valve.