Injection system fault codes

code no	Corresponding element of the system
—	No faults
11	No power to control unit
12	No engine speed signal
13	There is no signal about the number of revolutions over 1500 rpm.
14	No ignition signal
21	No signal from oxygen sensor
22	No signal from coolant temperature sensor
24	No signal from intake air temperature sensor
25	Too lean air/fuel mixture
26	Too rich fuel-air mixture
31	No vacuum sensor signal
41	No throttle switch signal
42	No speed sensor signal
43	No starter signal
51	No throttle switch signal
52	No knock sensor signal
53	Anti-knock adjustment in the control unit does not work1

¹⁾ Only for 1.6L engine with designations 4A-GE and 4A-GEL.