ECM Fault Codes

See ECMQuickGuide for instructions on retrieving these codes from the ECM.

Code	Causes	Engine Symptoms
0	No power to engine control module (ECM) Faulty bank angle sensor or wiring Faulty engine stop relay or wiring Faulty engine stop switch or wiring Faulty ignition switch Faulty ECM Blown PGM-FI fuse (See FuseBlock) Open circuit in engine stop switch ground Blown starter/ignition fuse (See FuseBlock)	No start
0	Malfunction indicator light (MIL a.k.a. FI light) wiring Faulty ECM	Runs normally
0	Short in service check connector Faulty ECM	Runs normally, MIL stays lit
1	Manifold absolute pressure (MAP) sensor or wiring	Runs normally
2	Manifold absolute pressure (MAP) sensor or vacuum hose	Runs normally
7	Engine coolant temperature (ECT) sensor or wiring	Hard start when cold
8	Throttle position (TP) sensor	Poor response on quick throttle operation
9	Inside air temperature (IAT) sensor or wiring	Runs normally
11	Vehicle speed senor (VSS) or wiring	Runs normally
12	Injector #1, wiring or mouse damage*	No start
13	Injector #2, wiring or mouse damage*	No start
14	Injector #3, wiring or mouse damage*	No start
15	Injector #4, wiring or mouse damage*	No start
18	Cam pulse generator or wiring	No start
19	Ignition pulse generator or wiring	No start
21	Oxygen sensor on 1/3 (left) side	Runs normally
22	Oxygen sensor on 2/4 (right) side	Runs normally
23	Oxygen sensor heater on 1/3 (left) side	Runs normally
24	Oxygen sensor heater on 2/4 (right) side	Runs normally
25	Left knock sensor or wiring	Runs normally
26	Right knock sensor or wiring	Runs normally
33	Faulty EEPROM in ECM	Runs normally, loses diagnostic data

*If you're in denial over mouse damage, remove the air box and check. The ST has no history of injector failures and a long history of the wiring being eaten by mice nesting in the top of the engine.

-- MarkFeit - 26 Sep 2015