Acura 3.2TL – 3.5RL (1996 – 2004) OBD1 Codes

Model	Year	Engine identification	System
3.2TL	1996-98	C32A6	PGM-FI
3.5RL	1996-04	C35A1	PGM-FI

General information

Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults.
Engine control module (ECM) incorporates self-diagnosis function.
Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop.
Trouble codes can be displayed by using a Scan Tool connected to the data link connector (DLC) [1] [1].
Trouble codes can be displayed by the malfunction indicator lamp (MIL) with the data link connector (DLC) 1 [1] jumped, or service check connector [1] [2] jumped.

NOTE: The use of a Scan Tool is essential to obtain full diagnostic information.

Accessing

Ensure ignition switched OFF.
Models without service check connector: Jump data link connector (DLC) terminals 4 and 9 [1] [1].
Models with service check connector: Jump service check connector terminals [1] [2].
Switch ignition ON.
Check MIL is flashing.
Trouble codes 1-9 are indicated as follows:

o Individual short flashes display trouble code [2] [A].
o A short pause separates each flash [2] [B].
o A long pause separates each trouble code [2] [C].
o For example: Trouble code 3 displayed [2].

Trouble codes greater than 9 are indicated as follows:

o Long flashes indicate the ‘tens’ of the trouble code [3] [A].
o Short flashes indicate the ‘units’ of the trouble code [3] [C].
o A short pause separates each flash [3] [B].
o A long pause separates each trouble code [3] [D].
o For example: Trouble code 12 displayed [3].

Count MIL flashes and compare with trouble code table.
Switch ignition OFF.
Remove jump lead.

Erasing

After the faults have been rectified, trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
Switch ignition OFF.
3.5RL- remove radio fuse (7.5A) from underhood fusebox for 10 seconds minimum [4].
3.2TL- remove radio fuse (10A) from underhood fusebox for 10 seconds minimum [4].
Reinstall fuse.
Repeat checking procedure to ensure no data remains in ECM fault memory.

Trouble code identification

Flash code	OBD-11 code	Fault location	Probable cause
–	PO, P2, uo	Refer to OBD-11 trouble code tables	–
1	–	Heated oxygen sensor (H02S) – LH front- circuiUvoltage low/high	Wiring, fuel system, H025, ECM
2	–	Heated oxygen sensor (H02S) – RH front – circuiUvoltage low/high	Wiring, H025, fuel system, ECM
3	–	Manifold absolute pressure (MAP) sensor – circuiUvoltage low	Wiring, MAP sensor, ECM
3	–	Manifold absolute pressure (MAP) sensor – circuiUvoltage high	Wiring open circuit, MAP sensor, ECM
4	–	Crankshaft position (CKP) sensor 1 – range/performance problem/circuit malfunction	Wiring, CKP sensor, valve timing, ECM
5	–	Manifold absolute pressure (MAP) sensor – range/performance problem	Hose leak/blockage, MAP sensor
5	P1128	Manifold absolute pressure (MAP) sensor – pressure lower than expected	MAP sensor
5	P1129	Manifold absolute pressure (MAP) sensor – pressure higher than expected	MAP sensor
6	–	Engine coolant temperature (ECT) sensor – circuit/voltage low/high	Wiring, ECT sensor, ECM
7	–	Throttle position (TP) sensor – circuit/ voltage low/high	Wiring, TP sensor, ECM
7	P1121	Throttle position (TP) sensor – position lower than expected	TP sensor
7	P1122	Throttle position (TP) sensor- position higher than expected	TP sensor
8	P1361	Camshaft position (CMP) sensor 1 – intermittent	Wiring, CMP sensor
8	P1362	Camshaft position (CMP) sensor 1 – no signal	Wiring, CMP sensor
9	P1381	Camshaft position (CMP) sensor 1 – range/ performance problem	CMP sensor
9	P1382	Camshaft position (CMP) sensor 1 – malfunction	Wiring, CMP sensor, ECM
10	–	Intake air temperature (IAT) sensor- range/ performance problem/circuit/voltage low/ high	Wiring short circuit, IAT sensor, ECM
12	P1491	Exhaust gas recirculation (EGR) system – valve lift insufficient	Wiring, EGR valve/position sensor, EGR solenoid, hose leak/blockage, ECM
12	P1498	Exhaust gas recirculation (EGR) valve position sensor – voltage high	Wiring, EGR valve/position sensor, ECM
13	P1106	Barometric pressure (BARO) sensor- range/performance problem	ECM
13	P1107	Barometric pressure (BARO) sensor- circuit/voltage low	ECM
13	P1108	Barometric pressure (BARO) sensor- circuit/voltage high	ECM
14	–	Idle control system – malfunction	lAC valve, fast idle thermo valve, throttle body
14	P1508	Idle air control (lAC) valve – circuit failure	Wiring, lAC valve, ECM
14	P1519	Idle air control (lAC) valve – circuit malfunction	Wiring, lAC valve, ECM
20	P1297	Electrical load control module – voltage low	Wiring, electrical load control module
20	P1298	Electrical load control module -voltage high	Wiring, electrical load control module
22	P1259	Camshaft position (CMP) actuator- circuit malfunction	Wiring, CMP actuator, ECM
23	–	Knock sensor (KS) – single or LH – circuit malfunction	Wiring, KS, ECM
34	–	System voltage – malfunction	Wiring, poor connection, battery, alternator
35	P1676	ABS/TCS control module – communication malfunction	Wiring, ABS/TCS control module, ECM
35	P1678	ABS/TCS control module – malfunction	Wiring, ABS/TCS control module, ECM
35	P1690	Traction control system – circuit failure	Wiring, traction control module, ECM
36	P1696	Traction control system- voltage low	Wiring, traction control module, ECM
36	P1697	Traction control system – voltage high	Wiring, traction control module, ECM
41	–	Heated oxygen sensor (H02S) – LH front – heater circuit malfunction	Wiring, ECM
42	–	Heated oxygen sensor (H02S) – RH front- heater circuit malfunction	Wiring, ECM
45	–	Mixture too lean/rich – LH bank	Fuel system, LH H02S, MAP sensor, mechanical fault
46	–	Mixture too lean/rich – RH bank	Fuel system, RH H02S, MAP sensor, mechanical fault
53	–	Knock sensor (KS) – RH – circuit malfunction	Wiring, KS, ECM
54	P1336	Crankshaft position (CKP) sensor 2 – range/performance problem .	CKP sensor, valve timing
54	P1337	Crankshaft position (CKP) sensor 2 – circuit malfunction	Wiring, CKP sensor, ECM
58	P1366	Camshaft position (CMP) sensor 2 – intermittent	Wiring, CMP sensor
58	P1367	Camshaft position (CMP) sensor 2 – no signal	Wiring, CMP sensor
59	P1386	Camshaft position (CMP) sensor 2 – range/ performance problem	CMP sensor
59	P1387	Camshaft position (CMP) sensor 2 – malfunction	Wiring, CMP sensor, ECM
61	–	Heated oxygen sensor (H02S) – LH front – slow response	H02S, exhaust system
62	–	Heated oxygen sensor (H02S) – RH front- slow response	H02S, exhaust system
63	–	Heated oxygen sensor (H02S) – rear- slow response/circuiUvoltage low	Wiring, H02S, ECM
65	–	Heated oxygen sensor (H02S) – rear- heater circuit malfunction	Wiring, ECM
67	–	Catalytic converter – efficiency below limit	Catalytic converter, rear H02S
70	–	AT- lock-up clutch not engaging/no gear shift	Wiring, mainshaft speed sensor, countershaft speed sensor, lock-up control system, shift solenoid (SS) AlB, TCM
70	P1656	Electronic stability programme (ESP) control module – communication malfunction	Wiring, ESP control module
70	P1705	AT – gear shift malfunction	Wiring, range position switch, ECM
70	P1705	AT – lock-up clutch not engaging	Wiring, range position switch, ECM
70	P1706	AT – gear shift malfunction	Wiring, range position switch, ECM
70	P1706	AT – lock-up clutch malfunction	Wiring, range position switch, ECM
70	P1709	AT – range position switch	Wiring, range position switch, ECM
70	P1710	AT- 1st gear hold switch	Wiring, range position switch, ECM
70	P1739	AT – 3rd clutch pressure switch	Wiring, range position switch, ECM
70	P1740	AT – 4th clutch pressure switch	Wiring, range position switch, ECM
70	P1750	AT – hydraulic system mechanical malfunction	Wiring, range position switch, ECM
70	P1751	AT – hydraulic system mechanical malfunction	Wiring, range position switch, ECM
70	P1753	AT – lock-up clutch not engaging/ disengaging	Wiring, lock-up control solenoid A, ECM
70	P1758	AT·- no gear shift	Wiring, lock-up control solenoid B, ECM
70	P1768	AT- no gear shift	Wiring, linear solenoid, ECM
70	P1773	Shift solenoid (SS) B	Wiring, shift solenoid, ECM
70	P1778	Shift solenoid (SS) C	Wiring, shift solenoid, ECM
70	P1791	AT – lock-up clutch not engaging	Wiring, VSS, ECM
71	P1201	Cylinder No.1 – misfire	Wiring, injector, ignition system, mechanical fault
71	P1301	Cylinder No.1 – misfire	Ignition system
72	P1202	Cylinder No.2 – misfire	Wiring, injector, ignition system, mechanical fault
72	P1302	Cylinder No.2 – misfire	Ignition system
73	P1203	Cylinder No.3 – misfire	Wiring, injector, ignition system, mechanical fault
73	P1303	Cylinder No.3 – misfire	Ignition system
74	P1204	Cylinder No.4 – misfire	Wiring, injector, ignition system, mechanical fault
74	P1304	Cylinder No.4 – misfire	Ignition system
75	P1205	Cylinder No.5 – misfire	Wiring, injector, ignition system, mechanical fault
75	P1305	Cylinder No.5 – misfire	Ignition system
76	P1206	Cylinder No.6 – misfire	Wiring, injector, ignition system, mechanical fault
76	P1306	Cylinder No.6 – misfire	Ignition system
–	P1300	Random misfire	EGR/fuel/ignition system, MAP sensor
79	P1316	Spark plug voltage detection – LH bank – circuit malfunction	Wiring, voltage detection module, ECM
79	P1317	Spark plug voltage detection – RH bank – circuit malfunction	Wiring, voltage detection module, ECM
79	P1318	Spark plug voltage detection module reset – LH bank – reset circuit malfunction	Wiring, voltage detection module, ECM
79	P1319	Spark plug voltage detection module reset – RH bank – reset circuit malfunction	Wiring, voltage detection module, ECM
80	–	Exhaust gas recirculation (EGR) solenoid – insufficient flow	EGR solenoid, hose/pipe leak or blockage
86	–	Engine coolant temperature (ECT) sensor – range/performance problem	ECT sensor, cooling system
87	–	Thermostat – range/performance problem	Thermostat, cooling system
87	P1486	Thermostat – range/performance problem	Engine coolant blower motor, cooling system
90	P1456	Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detected	Hose leak/blockage, fuel tank/pressure sensor, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/vent valve
90	P1457	Evaporative emission (EVAP) canister purge system (canister system) – leak detected	Hose leak/blockage, fuel tank/ pressure sensor, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/vent valve
91	–	Evaporative emission (EVAP) pressure sensor – range/performance problem	Wiring, EVAP pressure sensor
91	–	Fuel tank pressure sensor- circuit/voltage low/high	Wiring open circuit, pressure sensor, ECM
92	–	Evaporative emission (EVAP) canister purge system – incorrect flow	EVAP solenoid/flow switch, wiring, throttle body, hose leak/blockage, ECM
92	P1459	Evaporative emission (EVAP) canister purge system – switch malfunction	Wiring, flow switch, hose leak/blockage, ECM
–	P1399	Random misfire	Wiring, injector, ignition system, mechanical fault
–	P1607	Engine control module (ECM) – internal circuit failure A	ECM