P0340 on the 2003 Dodge Neon
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 1802603A | 2003-11-11. Service bulletin. ENGINE NO START (ENGINE WILL START IMMEDIATELY AFTER CYCLING THE IGNITION KEY), MALFUNCTION INDICATOR LAMP ILLUMINATION WITH FALSE DIAGNOSTIC TROUBLE CODES (DTC) P0016, P0116, P0335, P0339, P0340, P0462, P0498, P0499, P0522, P0622, P1604, P1681, P1686, P1698. *TT |
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| 1802603 | 2003-08-12. Service bulletin. ENGINE NO START (ENGINE WILL START IMMEDIATELY AFTER CYCLING THE IGNITION KEY), MALFUNCTION INDICATOR LAMP ILLUMINATION WITH FALSE DIAGNOSTIC TROUBLE CODES (DTC) P0016, P0335, P0339, P0340, P0462, P0498, P0499. *TT |
| 1802902 | 2003-02-22. Service bulletin. ENGINE NO START (ENGINE WILL START IMMEDIATELY AFTER CYCLING THE IGNITION KEY), MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION WITH DIAGNOSTIC TROUBLE CODE (DTC) P0016, P0335, P0339, P0340, P0462, P0498, P0499, P0522, P0622, P1604, P1681, P1686. *TT |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.