Acura OBD/OBD2 Codes >> 3.2TL (1999 – 2003)

ModelYearEngine identificationSystem
3.2TL1999-03J32A1  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 only be displayed by using a Scan Tool connected to the data link connector (DLC) [1] 2002 or [2] 2003.


  • 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.
  • Remove clock/backup fuse (7.5A) from RH fascia fusebox for 10 seconds minimum [3]
  • Reinstall fuse.
  • Repeat checking procedure to ensure no data remains in ECM fault memory.

Trouble code  identification

Flash codeOBD-11 codeFault locationProbable cause
PO, P2,   uoRefer to OBD-11 trouble code tables
1Heated oxygen sensor (H02S) – front – circuit/voltage high/lowWiring short/open circuit, H025, fuel system, ECM
3Manifold absolute pressure (MAP) sensor – circuit/voltage low/highWiring, MAP sensor, ECM
4Crankshaft position (CKP) sensor – circuit malfunction/range/performance problemWiring, CKP sensor, ECM
5Manifold absolute pressure (MAP) sensor – range/performance problemHose leak/blockage, MAP sensor
5P1128Manifold absolute pressure (MAP) sensor – pressure lower than expectedMAP sensor
5P1129Manifold absolute pressure (MAP) sensor – pressure higher than expectedMAP sensor
6Engine coolant temperature (ECT) sensor – circuit/voltage low/highWiring short/open circuit, ECT sensor, ECM
7Throttle position (TP) sensor – circuit!   voltage low/highWiring, TP sensor, ECM
7P1121Throttle position (TP) sensor – position lower than expectedTP sensor
7P1122Throttle position (TP) sensor – position higher than expectedTP sensor
8P1361Crankshaft position (CKP) sensor 1 – intermittent signalCKP sensor
8P1362Crankshaft position (CKP) sensor 1 – no signalWiring, CKP sensor, ECM
10Intake air temperature (fAT) sensor- circuit!   voltage low/highWiring short/open circuit, IAT sensor, ECM
12P1491Exhaust gas recirculation (EGR) system – valve lift insufficientWiring, EGR valve/position sensor, EGR  
solenoid, hose leak/blockage, ECM
12P1498Exhaust gas recirculation (EGR) valve position sensor – voltage highWiring, EGR valve/position sensor, ECM
13P1106Barometric pressure (BARO) sensor- range/performance problemECM
13P1107Barometric pressure (BARO) sensor- circuit/voltage lowWiring, TCM, ECM
13P1108Barometric pressure (BARO) sensor- circuit/voltage highECM
14Idle control system – malfunctionlAC valve, fast idle thermo valve, throttle body
14P1519Idle control system – malfunctionlAC valve, fast idle thermo valve, throttle body
20P1297Electrical load sensor – circuit/voltage lowWiring, electrical load sensor, ECM
20P1298Electrical load sensor – circuit/voltage highWiring, electrical load sensor, ECM
22P1259VTEC system malfunctionWiring, VTEC solenoid/pressure switch, ECM
23Knock sensor (KS)- circuit malfunctionWiring, KS, ECM
35P1676ABS/TCS control module – communication malfunctionWiring, ABS/TCS control module, ECM
35P1678ABsrrcs control module – communication malfunctionWiring, ABsrrcs control module, ECM
37P1656Electronic stability programme (ESP) control module – communication malfunctionWiring, ESP control module
41Heated oxygen sensor (H02S) – front – circuit malfunctionWiring, ECM
45Mixture too lean/richFuel system, front H02S, MAP sensor, mechanical fault
58P1366Crankshaft position (CKP) sensor 2 – intermittent signalCKP sensor
58P1367Crankshaft position (CKP) sensor 2 – no signalWiring, CKP sensor, ECM
61Heated oxygen sensor (H02S) -front – slow responseH02S, exhaust system
63Heated oxygen sensor (H02S) – rear- slow response/circuit/voltage low/highWiring, H02S, ECM
65Heated oxygen sensor (H02S) – rear- circuit malfunctionWiring, ECM
67Catalytic converter – efficiency below limitCatalytic converter, rear H02S
70AT – lock-up clutch not engaging/no gear shiftWiring, mainshaft speed sensor, countershaft speed sensor, Jock-up control system, shift solenoid (55) AlB, TCM
70P1656Electronic stability programme (ESP) control module – communication malfunctionWiring, ESP control module
70P1705AT – gear shift malfunctionWiring, range position switch, TCM
70P1706AT- gear shift malfunctionWiring, range position switch, TCM
70P1709AT – gear selection malfunctionWiring, transmission gear selection switch, detent bracket, detent plunger/ spring, ECM
70P1710AT- 1st gear hold switchWiring, range position switch, detent bracket/ plunger/spring, ECM
70P1738AT – 2nd clutch pressure switchWiring, range position switch, 2nd clutch pressure switch, ECM
70P1739AT – 3rd clutch pressure switchWiring, range position switch, 3rd clutch pressure switch, ECM
70P1740AT- 4th clutch pressure switchWiring, range position switch, 4th clutch pressure switch, ECM
70P1750AT- hydraulic system mechanical malfunctionWiring, shift solenoids, ECM, transmission mechanical fault
70P1751AT- hydraulic system mechanical malfunctionWiring, shift solenoids, ECM, transmission mechanical fault
70P1753AT- lock-up clutch not engaging/   disengagingWiring, lock-up control solenoid A, TCM
70P1768Shift solenoid (SS) AWiring, shift solenoid, ECM
70P1773Shift solenoid (SS) 8Wiring, shift solenoid, ECM
70P1778Shift solenoid (SS) CWiring, shift solenoid, ECM
71Cylinder No.1 – misfireWiring, injector, ignition system, mechanical fault
72Cylinder No.2 – misfireWiring, injector, ignition system, mechanical fault
73Cylinder No.3 – misfireWiring, injector, ignition system, mechanical fault
74Cylinder No.4 – misfireWiring, injector, ignition system, mechanical fault
75Cylinder No.5 – misfireWiring, injector, ignition system, mechanical fault
76Cylinder No.6 – misfireWiring, injector, ignition system, mechanical fault
P1300Random misfireFuel/ignition system, MAP sensor, lAC valve
P1399Random misfireFuel/ignition system, MAP sensor, lAC valve
80Exhaust gas recirculation (EGR) solenoid – insufficient flowEGR solenoid, hose/pipe leak or blockage
86Engine coolant temperature (ECT) sensor – range/performance problemECT sensor, cooling system
87P1486Thermostat – range/performance problemEngine coolant blower motor, cooling system
90P1456Evaporative emission (EVAP) canister purge system (fuel tank system) – leak detectedHose, fuel tank/pressure sensor, fuel filler cap, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/vent valve
90P1457Evaporative emission (EVAP) canister purge system (canister system) – leak detectedHose, fuel tank/pressure sensor, EVAP valve/bypass solenoid, EVAP two way valve, EVAP canister/vent valve
91Fuel tank pressure sensor- circuiUvoltage low/highWiring, pressure sensor, ECM
P1607Engine control module (ECM) – internal circuit failureECM