Acura RL (1996-2004 year). Manual — part 266
Troubleshooting
Diagnostic Trouble Code (DTC) Chart (cont'd)
DTC
(MIL indication)
P0139 (63)*
2
P0141 (65)
P0153 (61)*
2
P0154 (1)
P0155 (41)
P0171 (46)*
2
P0172 (46)*
2
P0174 (45)*
2
P0175 (45)*
2
P0300
P0325 (53)
P0330 (23)
Detection Item
Secondary Heated Oxygen Sensor
(Secondary H02S) Slow Response
(Sensor 2)
Secondary Heated Oxygen
Sensor (Secondary HO2S) Heater
Circuit Malfunction (Sensor 2)
Left Primary Heated Oxygen
Sensor (Left Primary HO2S) Slow
Response (Bank 2, Sensor 1)
Left Primary Heated Oxygen
Sensor (Left Primary HO2S)
Heater System Malfunction
Left Primary Heated Oxygen
Sensor (Left Primary H02S)
Heater Circuit Malfunction (Bank
2, Sensor 1)
Fuel System Too Lean [Right
Bank (Bank 1)]
Fuel System Too Rich [Right Bank
(Bank 1)]
Fuel System Too Lean [Left Bank
(Bank 2)]
Fuel System Too Rich [Left Bank
(Bank 2)]
Random Misfire
Right Knock Sensor (Bank 1)
Circuit Malfunction
Left Knock Sensor (Bank 2)
Circuit Malfunction
Probable Cause
• Secondary H02S (Sensor 2)
• Open or short in Secondary H02S
(Sensor 2) heater circuit
• PCM
• Left Primary H02S (Bank 2, Sensor 1)
• Exhaust system
• Open in Left Primary H02S (Bank 2,
Sensor 1) circuit
• Left Primary H02S (Bank 2, Sensor 1)
• PCM
• Open or short in Left Primary HO2S
(Bank 2, Sensor 1) heater circuit
• PCM
• Fuel supply system
• Right Primary H02S (Bank 1, Sensor 1)
• MAP sensor
• Contaminated fuel
• Valve clearance
• Exhaust leakage
• Fuel supply system
• Right Primary HO2S (Bank 1, Sensor 1)
• MAP sensor
• Contaminated fuel
• Valve clearance
• Fuel supply system
• Left Primary H02S (Bank 2, Sensor 1)
• MAP sensor
• Contaminated fuel
• Exhaust leakage
• Fuel supply system
• Left Primary H02S (Bank 2, Sensor 1)
• MAP sensor
• Contaminated fuel
• Ignition system
• Fuel supply system
• MAP sensor
• EGR system
• Contaminated fuel
• Lack of fuel
• Open or short in Right Knock Sensor
(Bank 1) circuit
• Right Knock Sensor (Bank 1)
• PCM
• Open or short in Left Knock Sensor
(Bank 2) circuit
• Left Knock Sensor (Bank 2)
• PCM
Page
*2: These DTCs require two "trips" or two driving cycles unless the SCS service connector is connected.
Main Menu
Table of Contents
DTC
(MIL indication)
P0345 (4)
P0349 (4)
P0390 (9)
P0394 (9)
P0401 (80)*
2
P0404 (12)
P0406 (12)
P0420 (67)*
2
P0451 (91)
P0452 (91)
P0453 (91)
P0497 (90)*
2
P0506 (14)*
2
P0507 (14)*
2
Detection Item
Crankshaft Position (CKP) 1
Sensor Circuit No Signal
Crankshaft Position (CKP) 1
Sensor Intermittent Interruption
Camshaft Position (CMP) (Cylinder
Position (CYP)) 1 Sensor Circuit
No Signal
Camshaft Position (CMP) (Cylinder
Position (CYP)) 1 Sensor
Intermittent Interruption
Exhaust Gas Recirculation (EGR)
Insufficient Flow
Exhaust Gas Recirculation (EGR)
Valve Insufficient Lift
EGR Valve Lift Sensor
High Voltage
Catalyst System Efficiency Below
Threshold
Fuel Tank Pressure (FTP) Sensor
Circuit Range/Performance
Fuel Tank Pressure (FTP) Sensor
Circuit Low Voltage
Fuel Tank Pressure (FTP) Sensor
Circuit High Voltage
Evaporative Emission (EVAP)
System Low Purge Flow
Idle Control System RPM Lower
Than Expected
Idle Control System RPM Higher
Than Expected
Probable Cause
• CKP 1 Sensor
• CKP 1 Sensor circuit
• PCM
• CKP 1 Sensor
• Timing belt skipped teeth
• CMP (CYP) 1 Sensor
• CMP (CYP) 1 Sensor circuit
• PCM
• CMP (CYP) 1 Sensor
• EGR valve
• EGR line
• EGR valve (with position sensor)
• EGR valve position sensor circuit
• EGR valve vacuum control solenoid valve
• EGR valve vacuum control solenoid valve
circuit
• EGR line
• PCM
• EGR valve (with position sensor)
• EGR valve position sensor circuit
• PCM
• Three Way Catalytic converter
• Secondary HO2S
• FTP Sensor
• PCM
• Open or short in FTP sensor circuit
• FTP Sensor
• PCM
• Open in FTP Sensor circuit
• FTP Sensor
• PCM
• EVAP canister purge valve
• EVAP canister vent shut valve
• IAC valve
• Throttle body
• IAC valve
• IAC thermal valve
• Throttle body
Page
*2: These DTCs require two "trips" or two driving cycles unless the SCS service connector is connected.
(cont'd)
Main Menu
Table of Contents
Troubleshooting
Diagnostic Trouble Code (DTC) Chart (cont'd)
DTC
(MIL indication)
P0511 (14)
P0560 (34)
P0607 (-)
P07xx (70)*
3
P0700***
P1121 (7)
P1122 (7)
P1128 (5)
P1129 (5)
P1201
P1202
P1203
P1204
P1205
P1206
P1301
P1302
P1303
P1304
P1305
P1306
P1316 (79)
P1317 (79)
P1318 (79)
P1319 (79)
P1336 (54)
P1337 (54)
Detection Item
Idle Air Control (IAC) Valve
Circuit Failure
PCM Back-up Circuit Low Voltage
Powertrain Control Module (PCM)
Internal Circuit Failure
Automatic Transaxle System
Malfunction
Throttle Position (TP) Sensor signal
Lower Than Expected
Throttle Position (TP) Sensor signal
Higher Than Expected
Manifold Absolute Pressure (MAP)
Sensor signal Lower Than Expected
Manifold Absolute Pressure (MAP)
Sensor signal Higher Than Expected
No. 1 Cylinder Misfire
No. 2 Cylinder Misfire
No. 3 Cylinder Misfire
No. 4 Cylinder Misfire
No. 5 Cylinder Misfire
No. 6 Cylinder Misfire
No. 1 Cylinder Misfire
No. 2 Cylinder Misfire
No. 3 Cylinder Misfire
No. 4 Cylinder Misfire
No. 5 Cylinder Misfire
No. 6 Cylinder Misfire
Spark Plug Voltage Detection
Circuit Malfunction
[Left Bank (Bank 2)]
Spark Plug Voltage Detection
Circuit Malfunction
[Right Bank (Bank 1)]
Spark Plug Voltage Detection
Module Reset Circuit Malfunction
[Left Bank (Bank 2)]
Spark Plug Voltage Detection
Module Reset Circuit Malfunction
[Right Bank (Bank 1)]
Crankshaft Position (CKP) 2
Sensor Circuit Intermittent
Interruption
Crankshaft Position (CKP) 2
Sensor Circuit No Signal
Probable Cause
• IAC valve
• IAC valve circuit
• PCM
• PCM Back-up Circuit
• PCM
• PCM
• TP sensor
• TP sensor
• MAP sensor
• MAP sensor
• Injector
• Injector circuit
• Ignition system
• Low compression
• Ignition system
• Open or short in Spark Plug Voltage
Detection Module circuit
• Spark Plug Voltage Detection Module
• PCM
• Open or short in Spark Plug Voltage
Detection Module circuit
• Spark Plug Voltage Detection Module
• PCM
• Open or short in Spark Plug Voltage
Detection Module Reset circuit
• Spark Plug Voltage Detection Module
• PCM
• Open or short in Spark Plug Voltage
Detection Module Reset circuit
• Spark Plug Voltage Detection Module
• PCM
• CKP 2 Sensor
• Timing belt skipped teeth
• CKP 2 Sensor
• CKP 2 Sensor circuit
• PCM
Page
*3: The indicator light and the Malfunction Indicator Lamp (MIL) may come on simultaneously.
***: DTC P0700 indicates that the MIL came on because an automatic transmission DTC was set. Go to A/T menu on the HDS or
scan tool to check the A/T DTC and freeze data.
Main Menu
Table of Contents
DTC
(MIL indication)
P1386 (59)
P1387 (59)
P1456 (90)*
2
P1457 (90)*
2
P1486 (87)
P1690 (35)
P1696 (36)
PI 697 (36)
P17xx (70) *
3
P2195 (2)*
2
P2197 (1)*
2
P2227 (13)
P2228 (13)
P2229 (13)
Detection Item
Camshaft Position (CMP) (Cylinder
Position (CYP)) 2 Sensor
Intermittent Interruption
Camshaft Position (CMP) (Cylinder
Position (CYP)) 2 Sensor
Circuit No Signal
Evaporative Emission (EVAP)
Control System Leakage (Fuel
Tank System)
Evaporative Emission (EVAP)
Control System Leakage (EVAP
Canister Area)
Cooling System Malfunction
TCSTB Line Failure
TCFC Signal
Low Voltage
TCFC Signal
High Voltage
Automatic Transaxle System
Malfunction
Right Primary Heated Oxygen
Sensor (Right Primary HO2S)
Circuit Low Voltage (Bank 1,
Sensor 1)
Left Primary Heated Oxygen
Sensor (Left Primary H02S)
Circuit Low Voltage (Bank 2,
Sensor 1)
Barometric Pressure (BARO)
Sensor Circuit Range/
Performance Problem
Barometric Pressure (BARO)
Sensor Circuit Low Voltage
Barometric Pressure (BARO)
Sensor Circuit High Voltage
Probable Cause
• CMP (CYP) 2 Sensor
• CMP (CYP) 2 Sensor
• CMP (CYP) 2 Sensor circuit
• PCM
• Vacuum connection
• Fuel tank
• FTP sensor
• Fuel fill cap
• EVAP bypass solenoid valve
• EVAP two way valve
• EVAP canister vent shut valve
• EVAP canister
• EVAP canister purge valve
• Vacuum connection
• EVAP canister
• FTP sensor
• EVAP bypass solenoid valve
• EVAP two way valve
• EVAP canister vent shut valve
• Fuel tank
• EVAP canister purge valve
• Radiator Fan Circuit
• Thermostat
• TCSTB Line
• VSA converter unit
• PCM
• TCFC Line
• VSA converter unit
• PCM
• TCFC Line
• VSA converter unit
• PCM
• Short in Right Primary H02S (Bank 1,
Sensor 1) circuit
• Right Primary HO2S (Bank 1, Sensor 1)
• Fuel supply system
• PCM
• Short in Left Primary H02S (Bank 2,
Sensor 1) circuit
• Left Primary H02S (Bank 2, Sensor 1)
• Fuel supply system
• PCM
• PCM (Baro sensor)
• PCM (Baro sensor)
• PCM (Baro sensor)
Page
*2: These DTCs require two "trips" or two driving cycles unless the SCS service connector is connected.
*3: The indicator light and the Malfunction Indicator Lamp (MIL) may come on simultaneously.
(cont'd)
Main Menu
Table of Contents
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