DTC P1401 - EGR TEMPERATURE SENSOR Nissan 200SX S14

1. Check Ground Circuit Turn ignition switch to OFF position. Disconnect EGR temperature sensor harness connector. (Scheme 17) Using an ohmmeter, check continuity between engine ground and EGR temperature sensor harness connector terminal No. 2 (Black wire). If no continuity exists, repair open in Black wire. If continuity exists, go to next step.
2. Check Power Supply Turn ignition switch to ON position. Using a voltmeter, measure voltage between ground and EGR temperature sensor harness connector terminal No. 1 (Red/Black wire). If voltage is not approximately 5 volts, repair fault in Red/Black wire. If voltage is approximately 5 volts, go to next step.
3. Check Component Inspect EGR temperature sensor. See procedures in the «SYSTEM/COMPONENT TESTS - 2.0L»(ref-17821) article. Replace EGR temperature sensor as required. Disconnect and reconnect harness connectors in circuit and perform «FINAL CHECK»(ref-17820-S16658626442000122900000).

Scheme 17