HONDA Aquatrax Fault Codes
Number Of Honda PGM-FI Blinks Causes of Fault Symptoms
No Blinks • Loose or poor connection of the MAP sensor vacuum hose • Faulty MAP sensor • Engine operates normally
No Blinks • Open circuit at the power input and ground wires of the ECM • Blown sub-fuse D (7.5 A) • Faulty main relay • Open circuit in the main relay related circuits • Faulty engine stop switch • Open circuit in the engine stop switch related circuits • Faulty ECM • Blown main fuse (30 A) • Engine does not start
Continuous Blinking • Short circuit in the MIL wire • Faulty ECM • Engine operates normally
Stays lit • Short circuit in the service check connector wire • Engine operates normally
1 Blink • Loose or poorly connected MAP sensor connector • Open or short circuit in the MAP sensor wire • Faulty MAP sensor • Engine operates normally
2 Blinks • Loose or poor connection of the MAP sensor vacuum hose • Faulty MAP sensor • Engine operates normally
7 Blinks • Loose or poorly connected ECT sensor connector • Open or short circuit in the ECT sensor wire • Faulty ECT sensor • Hard to start at lowtemperatures (ECM controls using preset value; Cooling water temperature: 90°C/194°F) • Engine operates below 3,000 rpm
8 Blinks • Loose or poorly connected TP sensor connector • Open or short circuit in the TP sensor wire • Faulty TP sensor • Poor engine response when operating the throttle quickly (ECM controls using preset value; Throttle opening: 0°)
9 Blinks • Loose or poorly connected IAT sensor connector • Open or short circuit in the IAT sensor wire • Faulty IAT sensor • Engine operates below 3,000 rpm (ECM controls using preset value; Intake air temperature: 25°C/77°F)
12 Blinks • Loose or poorly connected No. 1 injector connector • Open or short circuit in the No. 1 injector wire • Faulty No. 1 injector • Engine operates below 3,000 rpm
13 Blinks • Loose or poorly connected No. 2 injector connector • Open or short circuit in the No. 2 injector wire • Faulty No. 2 injector • Engine operates below 3,000 rpm
14 Blinks • Loose or poorly connected No. 3 injector connector • Open or short circuit in the No. 3 injector wire • Faulty No. 3 injector • Engine operates below 3,000 rpm
15 Blinks • Loose or poorly connected No. 4 injector connector • Open or short circuit in the No. 4 injector wire • Faulty No. 4 injector • Engine operates below 3,000 rpm
18 Blinks • Loose or poorly connected cam pulse generator connector • Open or short circuit in the cam pulse generator wire • Faulty cam pulse generator • Engine does not start
19 Blinks • Loose or poorly connected ignition pulse generator connector • Open or short circuit in the ignition pulse generator wire • Faulty ignition pulse generator • Engine does not start
25 Blinks • Loose or poorly connected knock sensor connector • Open or short circuit in the knock sensor wire • Faulty knock senso • Engine operates below 3,000 rpm
29 Blinks • Loose or poorly connected IAC valve connector • Open or short circuit in the IAC valve wire • Faulty IAC valve • Engine stalls, hard to start, rough idling
33 Blinks • Faulty E2-PROM in the ECM • Engine operates normally • Does not hold the self-diagnostic data
42 Blinks • Loose or poorly connected TCP sensor connector • Open or short circuit in the TCP sensor wire • Faulty TCP sensor • Engine operates below 3,000 rpm
43 Blinks • Loose or poor connection of the TCP sensor pressure hose • Faulty TCP sensor • Engine operates below 3,000 rpm
44 Blinks • Loose or poorly connected engine oil temperature sensor connector • Open or short circuit in the engine oil temperature sensor wire • Faulty engine oil temperature sensor • Hard to start at lowtemperatures (ECM controls using preset value; Engine oil temperature: 90°C/194°F) • Engine operates below 3,000 rpm
45 Blinks • Loose or poorly connected wastegate control solenoid valve connector • Open or short circuit in the wastegate control solenoid valve wire • Faulty wastegate control solenoid valve • Loose or poor connection of the wastegate control solenoid valve hose • Clogged wastegate actuator pressure hose • Faulty wastegate actuator • Faulty TCP sensor • Engine operates below 3,000 rpm
46 Blinks • Faulty cooling system • Loose or poorly connected MST switch connector • Open or short circuit in the MST switch wire • Faulty MST switch • Engine does not start
47 Blinks • Faulty cooling system • Loose or poorly connected ECT sensor connector • Open or short circuit in the ECT sensor wire • Faulty ECT sensor • Engine operates below 3,000 rpm when the coolant temperature is 85 – 95°C (185 – 203°F) • Engine does not start when the coolant temperature is above 95°C (203°F)