Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
FORD, LINCOLN, MERCURY
Reported code forms P0402
STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP (MIL) ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401. ADDITIONAL SYMPTOMS MAY INCLUDE RUNS ROUGH, LACKS POWER, SURGE,…
FORD, LINCOLN, MERCURY
Reported code forms P0402
STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401. ADDITIONAL SYMPTOMS MAY INCLUDE RUNS ROUGH, LACKS POWER, SURGE, POOR…
FORD, LINCOLN, MERCURY
Reported code forms P0402
MALFUNCTION INDICATOR LAMP ON WITH OR WITHOUT ROUGH RUNNING, LACK OF POWER, SURGE OR POOR FUEL ECONOMY WITH DIAGNOSTIC TROUBLE CODES P0401, P0402, P1400, P1401. *TT *JB
FORD, LINCOLN, MERCURY
Reported code forms P0402
STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP (MIL) ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401, OR RUNS ROUGH, LACKS POWER, SURGE, POOR FUEL ECONOMY, AND THE…
FORD, MERCURY
Reported code forms P0402
SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ON WITH EGR SYSTEM RELATED DIAGNOSTIC TROUBLE CODES P0400, P0401, P0402, P1400, P1401, P1405, P1406, P1408, P1409. *TT
FORD
Reported code forms P0402
VEHICLES WITH DTC P0402 IN MEMORY ARE UNDER INVESTIGATION BY ENGINEERING DEPARTMENT. *TW
FORD, MERCURY
Reported code forms P0402
DTC P0402 IN MEMORY UNDER INVESTIGATION BY ENGINEERING. *TW