Flash code |
Scan code Hextype |
Fault location |
Probable cause |
11 |
|
Crankshaft position (CKP) sensor/camshaft position (CMP) sensor |
Wiring, poor connection, air gap, CKP sensor, CMP sensor |
85 |
Timing belt jumped 1 tooth or more |
Timing belt loose/jumped position |
90 |
Crankshaft position (CKP) sensor/camshaft position (CMP) sensor -intermittent signal |
Wiring, poor connection, air gap, CKP sensor, CMP sensor |
28 |
Crankshaft position (CKP) sensor no signal |
Wiring, air gap, CKP sensor |
8A |
Engine control module (ECM) -misfire detectionlimit reached |
Wiring, poor connection, CKP sensor |
12 |
|
Engine control module (ECM) -supply voltage disconnected within last 50 ignition switch ON-OFF cycles |
Wiring, battery |
13 |
27 |
Manifold absolute pressure (MAP) sensor |
Wiring, hose connection(s), MAP sensor |
14 |
|
Manifold absolute pressure (MAP) sensor inputlow/high |
Wiring, MAP sensor |
24 |
Manifold absolute pressure (MAP) sensor low input |
Wiring short circuit to ground, MAP sensor |
25 |
Manifold absolute pressure (MAP) sensor high input |
Wiring short circuit to positive, MAP sensor |
87 |
Manifold absolute pressure (MAP) sensor no 5 volt supply |
Wiring, ECM |
92 |
Manifold absolute pressure (MAP) sensor 5 volt output low |
Wiring, MAP sensor |
15 |
23 |
Vehicle speed sensor (VSS) -signal |
Wiring, VSS |
16 |
38 |
Knock sensor (KS) 1 -no signal |
Wiring, KS incorrectly tightened, KS |
17 |
|
Engine temperature -low for long period |
Wiring, cooling system, coolant thermostat, ECT sensor |
21 |
Engine temperature -low for long period |
Wiring, cooling system, coolant thermostat, ECT sensor |
80 |
Insufficient coolant temperature for closed loopfuel control |
Wiring, cooling system, coolant thermostat, ECT sensor |
21 |
|
Heated oxygen sensor (H02S) 1/2, bank 1 circuit malfunction/incorrect signal/voltage low/high |
Wiring, fuel pressure, injector control, EVAP canister purge valve, compression, air filterblocked, H02S |
98 |
Heated oxygen sensor (H02S) 1, bank 1 low voltage |
Wiring short circuit to ground, exhaust leak,H02S |
21 |
3E |
Heated oxygen sensor (H02S) 1, bank 1 high voltage |
Wiring short circuit to positive, fuel pressure,injector control, EVAP canister purge valve, air filter blocked, H02S |
66 |
Heated oxygen sensor (H02S) 1, bank 1 slow response |
Wiring, heating inoperative, H02S |
20 |
Heated oxygen sensor (H02S) 1, bank 1 no activity detected |
Wiring open circuit, heating inoperative, H02S |
67 |
Heated oxygen sensor (H02S) 1, bank 1 heater control -circuit malfunction |
Wiring, H02S |
9C |
Heated oxygen sensor (H02S) 2, bank 1 low voltage |
Wiring short circuit to ground, exhaust leak,H02S |
7E |
Heated oxygen sensor (H02S) 2, bank 1 highvoltage |
Wiring short circuit to positive, catalytic converter, H02S |
81 |
Heated oxygen sensor (H02S) 2, bank 1 no activity detected |
Wiring, heating inoperative, H02S |
69 |
Heated oxygen sensor (H02S) 2, bank 1, heater control -circuit malfunction |
Wiring, H02S |
22 |
|
Engine coolant temperature (ECT) sensor voltage low!high |
Wiring, coolant thermostat, ECT sensor |
1E |
Engine coolant temperature (ECT) sensor low input |
Wiring short circuit to ground, coolant thermostat, ECT sensor |
1F |
Engine coolant temperature (ECT) sensor high input |
Wiring open circuit/short circuit to positive,coolant thermostat, ground wire defective, ECT sensor |
23 |
|
Intake air temperature (IAT) sensor -voltage low!high |
Wiring, IAT sensor |
39 |
Intake air temperature (IAT) sensor -low input |
Wiring short circuit to ground, IAT sensor |
3A |
Intake air temperature (IAT) sensor -high input |
Wiring open circuit/short circuit to positive,ground wire defective, IAT sensor |
24 |
|
Throttle position (TP) sensor -voltage low! high |
Wiring, accelerator cable adjustment, TP sensor |
84 |
Throttle position (TP) sensor -range!performance problem |
Wiring, accelerator cable adjustment, TP sensor |
1A |
Throttle position (TP) sensor -low input |
Wiring short circuit to ground, TP sensor |
18 |
Throttle position (TP) sensor -high input |
Wiring short circuit to positive, TP sensor |
25 |
|
Idle air control (lAC) valve |
Wiring open/short circuit, air leak, lAC valve |
19 |
Idle speed control (ISC) system -malfunction |
Wiring open!short circuit, lAC valve |
8A |
Idle speed control (ISC) system -rpm lower!higher than expected |
Wiring, air leak, throttle valve tight/sticking, lAC valve |
91 |
Manifold absolute pressure (MAP) sensor!throttle position (TP) sensor |
Intake leak, hose connection(s), MAP sensor,TP sensor |
27 |
|
Injector -circuit malfunction |
Wiring, injector |
15 |
Injector 1 -circuit malfunction |
Wiring, injector |
27 |
14 |
Injector 2 -circuit malfunction |
Wiring, injector |
13 |
Injector 3 -circuit malfunction |
Wiring, injector |
3D |
Injector 4 -circuit malfunction |
Wiring, injector |
31 |
|
Evaporative emission (EVAP) canister purge valve -open/short circuit |
Wiring, EVAP canister purge valve |
71 |
Evaporative emission (EVAP) system incorrectflow detected |
Hose connection(s), intake leak, EVAP canister purge valve |
AO |
Evaporative emission (EVAP) system -small leak detected |
Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve |
12 |
Evaporative emission (EVAP) canister purge valve -circuit malfunction |
Wiring open/short circuit, EVAP canister purge valve |
A1 |
Evaporative emission (EVAP) system -large leak detected |
Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve |
88 |
Evaporative emission (EVAP) system blockage detected |
Hose connection(s), hose blocked/trapped, EVAP canister |
88 |
Evaporative emission (EVAP) leak detection pump -pressure switch |
Wiring, hose leak!blockage, EVAP leak detection pump |
87 |
Evaporative emission (EVAP) leak detection .pump solenoid |
Wiring open/short circuit, hose leak! blockage, EVAP leak detection pump solenoid |
32 |
|
Exhaust gas recirculation (EGR) solenoid/ system -circuit malfunction |
Wiring, hoses, EGR solenoid |
2E |
Exhaust gas recirculation (EGR) system insufficient flow detected |
Hose leak!blockage, wiring, EGR valve, EGR solenoid |
11 |
Exhaust gas recirculation (EGR) -circuit malfunction |
Wiring open/short circuit, EGR solenoid |
33 |
|
A/C compressor clutch reiay/AIC refrigerant pressure sensor -voltage low/high |
Wiring open/short circuit, Ale refrigerant pressure too low/high (cooling faultl incorrectly charged), Ale compressor clutch relay, Ale refrigerant pressure sensor |
10 |
A/C compressor clutch relay |
Wiring open/short circuit, Ale compressor clutch relay |
5A |
A/C refrigerant pressure sensor -high input |
Wiring, Ale refrigerant pressure too high (cooling faultlincorrectly charged), Ale refrigerant pressure sensor |
58 |
A/C refrigerant pressure sensor -low input |
Wiring, Ale refrigerant pressure too low (incorrectly charged), Ale refrigerant pressure sensor |
34 |
|
Cruise control |
Wiring open/short circuit, voltage low/high, cruise control master switch, cruise control vacuum switching valve |
OF |
Cruise control |
Wiring open/short circuit, voltage low/high, cruise control vacuum switching valve |
56 |
Cruise control master switch -high voltage |
Wiring, cruise control master switch |
57 |
Cruise control master switch -low voltage |
Wiring, cruise control master switch |
35 |
|
Engine coolant blower motor relay -low/highspeed |
Wiring open/short circuit, engine coolant blower motor relay -low/high speed |
50 |
Engine coolant blower motor relay -high speed |
Wiring open/short circuit, engine coolant blower motor relay -high speed |
5C |
Engine coolant blower motor relay -low speed |
Wiring open/short circuit, engine coolant blower motor relay -low speed |
37 |
|
Torque converter clutch (TCG) solenoid/park! neutral position (PNP) switch -circuit malfunction |
Wiring, TCC solenoid |
94 |
Torque converter clutch (TCC) solenoid circuit malfunction |
Wiring, TCC solenoid |
OC |
Torque converter clutch (TCG) solenoid electrical |
Wiring open/short circuit, TCC solenoid |
72 |
Park/neutral position (PNP) switch -input circuit malfunction |
Wiring, PNP switch, ECMfTCM |
41 |
8 |
Alternator, field control -circuit malfunction |
Wiring open/short circuit, alternator, battery |
42 |
|
Fuel pump relay/engine control relay/fuel level sensor circuit malfunction |
Wiring open/short circuit, fuel pump relay, engine control relay, fuel level sensor |
65 |
Fuel pump relay |
Wiring open/short circuit, fuel pump relay |
OA |
Engine control relay |
Wiring open/short circuit, engine control relay |
2C |
Engine control relay |
Wiring open circuit, engine control relay |
95 |
Fuel level sensor |
Wiring open circuit, fuel level sensor |
96 |
Fuel level sensor |
Wiring short circuit to positive, fuel level sensor |
97 |
Fuel level sensor |
Wiring, fuel level sensor |
43 |
|
Random/multiple cylinder(s) -misfire detected |
Wiring, spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression |
6A |
Random/multiple cylinder(s) -misfire detected |
Wiring, spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression |
68 |
Cylinder 1 -misfire detected |
Wiring, engine mechanical fault, .ignition/ fuel system, injector |
6C |
Cylinder 2 -misfire detected |
Wiring, engine mechanical fault, ignition/ fuel system, injector |
60 |
Cylinder 3 -misfire detected |
Wiring, engine mechanical fault, ignition/ fuel system, injector |
6E |
Cylinder 4 -misfire detected |
Wiring, engine mechanical fault, ignition/ fuel system, injector |
28 |
Ignition coil A, primary/secondary -circuit malfunction |
Wiring, ignition coil |
2A |
Ignition coil B, primary/secondary -circuit malfunction |
Wiring, ignition coil |
44 |
|
Ambient/battery temperature sensor -voltage low/high |
Wiring, ambient/battery temperature sensor |
9A |
Ambient/battery temperature sensor -voltagehigh |
Wiring, ambient/battery temperature sensor |
99 |
Ambient/battery temperature sensor -voltage low |
Wiring, ambient/battery temperature sensor |
45 |
89 |
Transmission control system -malfunction |
Wiring, transmission control module (TCM) |
46 |
6 |
Alternator -voltage high |
Wiring, battery, alternator |
47 |
5 |
Alternator -voltage low |
Wiring, battery, alternator drive belt, alternator |
51 |
77 |
System too lean |
Wiring, intake/exhaust leak, fuel pressure,injector control, EVAP canister purge valve,heated oxygen sensor (H02S) |
52 |
76 |
System too rich |
Wiring, exhaust blockage, fuel pressure, injectorcontrol, EVAP canister purge valve,compression, air filter blocked, ignition system,heated oxygen sensor (H02S) |
53 |
|
Engine control module (ECM) -internal fault |
ECM |
2 |
Engine control module (ECM) -internal fault |
ECM |
44 |
Engine control module (ECM) -internal fault |
ECM |
54 |
1 |
Camshaft position (CMP) sensor -no signal |
Wiring, CMP sensor |
55 |
|
End of MIL code output |
– |
62 |
30 |
Engine control module (ECM) EEPROM error |
ECM |
63 |
31 |
Engine control module (ECM) EEPROM error |
ECM |
65 |
|
Power steering pressure (PSP) switch/brake pedal position (BPP) switchlintake manifold aircontrol solenoid |
Wiring, PS system, PSP switch, BPP switch,intake manifold air control solenoid |
73 |
Power steering pressure (PSP) switch -range/performance problem |
Wiring, PS system, PSP switch |
98 |
Brake pedal position (BPP) switch B -circuit malfunction |
Wiring, BPP switch |
66 |
|
CAN data bus, transmission control module(TCM)/body control module (BCM) no signal |
Wiring, rCM, BCM |
60 |
CAN data bus, transmission control module(TCM) no signal |
Wiring, rCM |
61 |
CAN data bus, body control module (SCM) no signal |
Wiring, BCM |
71 |
92 |
Engine control module (ECM) 5 volt output low |
ECM |
72 |
70 |
Catalytic converter system -efficiency below threshold |
Wiring, catalytic converter, heated oxygensensor (H02S) 2 |
77 |
52 |
Cruise control |
Wiring, cruise control vacuum switching valve |