Acura CSX. Instruction — page 84

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DTC

(MIL indication )

Two Drive Cycle

Detection

Detection Item

MIL

Note

11-10

Fuel and Emissions Systems

P0325 (23)

Knock Sensor Circuit Malfunction

ON

(see page 11-126)

P0335 (4)

Crankshaft Position (CKP) Sensor No Signal

ON

(see page 11-128)

P0339 (4)

Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption

ON

(see page 11-131)

P0340 (57)

Camshaft Position (CMP) Sensor A No Signal

ON

(see page 11-278)

P0341 (57)

Camshaft Position (CMP) Sensor A and Crankshaft Position (CKP)
Sensor Incorrect Phase Detected

ON

(see page 11-281)

P0344 (57)

Camshaft Position (CMP) Sensor A Circuit Intermittent Interruption

ON

(see page 11-282)

P0365 (8)

Camshaft Position (CMP) Sensor B No Signal

ON

(see page 11-132)

P0369 (8)

Camshaft Position (CMP) Sensor B Circuit Intermittent Interruption

ON

(see page 11-134)

P0401 (80)

Exhaust Gas Recirculation (EGR) Insufficient Flow

ON

(see page 11-357)

P0404 (12)

Exhaust Gas Recirculation (EGR) Valve Circuit Range/Performance
Problem

ON

(see page 11-358)

P0406 (12)

Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High
Voltage

ON

(see page 11-361)

P0420 (67)

Catalyst System Efficiency Below Threshold

ON

(see page 11-353)

P0443 (92)

Evaporative Emission (EVAP) Canister Purge Valve Circuit
Malfunction

ON

(see page 11-375)

P0451 (91)

Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem

ON

(see page 11-379)

P0452 (91)

Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

ON

(see page 11-380)

P0453 (91)

Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

ON

(see page 11-383)

P0455 (90)

Evaporative Emission (EVAP) System Large Leak Detected

ON

(see page 11-386)

P0456 (90)

Evaporative Emission (EVAP) System Very Small Leak Detected

ON

(see page 11-386)

P0457 (90)

Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing

ON

(see page 11-390)

P0457 (90)

Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap
Loose or Missing

OFF

(see page 11-390)

P0461 (121)

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/
Performance Problem

OFF

(see page 11-313)

P0462 (121)

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage

OFF

(see page 11-313)

P0463 (121)

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage

OFF

(see page 11-315)

P0496 (92)

Evaporative Emission (EVAP) System High Purge Flow Detected

ON

(see page 11-391)

P0497 (90)

Evaporative Emission (EVAP) System Low Purge Flow Detected

ON

(see page 11-392)

P0497 (90)

Evaporative Emission (EVAP) System Low Purge Flow Detected

ON

(see page 11-395)

P0498 (117)

Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit Low
Voltage

ON

(see page 11-398)

P0499 (117)

Evaporative Emission (EVAP) Canister Vent Shut Valve Circuit High
Voltage

ON

(see page 11-401)

P0506 (14)

Idle Control System RPM Lower Than Expected

ON

(see page 11-298)

P0507 (14)

Idle Control System RPM Higher Than Expected

ON

(see page 11-300)

P050A (167)

Cold Start Idle Air Control System Performance Problem

ON

(see page 11-135)

P050B (167)

Cold Start Ignition Timing Control System Performance Problem

ON

(see page 11-137)

P0532 (191)

A/C Pressure Sensor Circuit Low Voltage

OFF

(see page 11-301)

P0533 (191)

A/C Pressure Sensor Circuit High Voltage

OFF

(see page 11-303)

P0562 (34)

Charging System Low Voltage

OFF

(see page 11-140)

P0563 (34)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Source Circuit Unexpected Voltage

OFF

(see page 11-141)

P0602 (196)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Programming Error

ON

(see page 11-144)

P0603 (131)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error

ON

(see page 11-144)

NOTE:

• The above DTCs are indicated when the PGM-FI system is selected with the HDS.
• Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T

system, and check for automatic transmission DTCs.

: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
4: K20Z2 engine
5: K20Z3 engine
6: ’06 model
7: ’07-09 models
8: ’06-08 models

4

4

4

6

7

6

7

4

5

4

5

8

08/08/21 14:12:35 61SNR030_110_0010

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DTC

(MIL indication )

Two Drive Cycle

Detection

Detection Item

MIL

Note

11-11

P0606 (0)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Processor Malfunction

ON

(see page 11-145)

P060A (131)

Powertrain Control Module (PCM) (A/T System) Internal Control
Module Malfunction

ON

(see page 11-145)

P062F (131)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Internal Control Module Keep Alive Memory (KAM) Error

ON

(see page 11-144)

P0630 (139)

VIN Not Programmed or Mismatch

ON

(see page 11-146)

P0685 (135)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Power Control Circuit/Internal Circuit Malfunction

ON

(see page 11-147)

P0720 (122)

Output Shaft (Countershaft) Speed Sensor Circuit Malfunction

ON

(see page 11-148)

P0720 (122)

Output Shaft (Countershaft) Speed Sensor Circuit Malfunction

ON

(see page 11-149)

P1009 (56)

Variable Valve Timing Control (VTC) Advance Malfunction

ON

(see page 11-283)

P1109 (13)

Barometric Pressure (BARO) Sensor Circuit Out of Range High

ON

(see page 11-152)

P1116 (86)

Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/
Performance Problem

ON

(see page 11-153)

P1128 (5)

Manifold Absolute Pressure (MAP) Sensor Signal Lower Than
Expected

ON

(see page 11-155)

P1129 (5)

Manifold Absolute Pressure (MAP) Sensor Signal Higher Than
Expected

ON

(see page 11-156)

P1157 (48)

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS Circuit High Voltage

ON

(see page 11-157)

P1172 (61)

Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Out of Range High

ON

(see page 11-159)

P1297 (20)

Electrical Load Detector (ELD) Circuit Low Voltage

OFF

(see page 11-160)

P1298 (20)

Electrical Load Detector (ELD) Circuit High Voltage

OFF

(see page 11-162)

P1454 (91)

Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem

ON

(see page 11-402)

P145C (90)

Evaporative Emission (EVAP) System Purge Flow Malfunction

ON

(see page 11-404)

P1549 (34)

Charging System High Voltage

OFF

(see page 11-164)

P1658 (40)

Electronic Throttle Control System (ETCS) Control Relay ON
Malfunction

ON

(see page 11-241)

P1659 (40)

Electronic Throttle Control System (ETCS) Control Relay OFF
Malfunction

ON

(see page 11-243)

P1683 (40)

Throttle Valve Default Position Spring Performance Problem

ON

(see page 11-247)

P1684 (40)

Throttle Valve Return Spring Performance Problem

ON

(see page 11-248)

P16BB (116)

Alternator B Terminal Circuit Low Voltage

OFF

(see page 11-165)

P16BC (116)

Alternator FR Terminal Circuit/IGP Circuit Low Voltage

OFF

(see page 11-166)

P2101 (40)

Electronic Throttle Control System (ETCS) Malfunction

ON

(see page 11-249)

P2118 (40)

Throttle Actuator Current Range/Performance Problem

ON

(see page 11-251)

P2122 (37)

Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit Low Voltage

ON

(see page 11-253)

P2123 (37)

Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP)
Sensor D) Circuit High Voltage

ON

(see page 11-256)

P2127 (37)

Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit Low Voltage

ON

(see page 11-257)

P2128 (37)

Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP)
Sensor E) Circuit High Voltage

ON

(see page 11-260)

P2135 (7)

Throttle Position (TP) Sensor A/B Incorrect Voltage Correlation

ON

(see page 11-262)

P2138 (37)

Accelerator Pedal Position (APP) Sensor A/B (Throttle Position (TP)
Sensor D/E) Incorrect Voltage Correlation

ON

(see page 11-264)

P2176 (40)

Throttle Actuator Control System Idle Position Not Learned

ON

(see page 11-266)

P2183 (192)

Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/
Performance Problem

ON

(see page 11-168)

P2184 (192)

Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage

ON

(see page 11-170)

P2185 (192)

Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage

ON

(see page 11-172)

P2195 (48)

Air Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean

ON

(see page 11-174)

NOTE:

• The above DTCs are indicated when the PGM-FI system is selected with the HDS.
• Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T

system, and check for automatic transmission DTCs.

: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
1: A/T
2: The D indicator and the MIL may come on at the same time (A/T).
3: M/T
4: K20Z2 engine
5: K20Z3 engine
9: ’09 model

1

9

1,

2

3

4

5

5

3

1

08/08/21 14:12:36 61SNR030_110_0011

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DTC

(MIL indication )

Two Drive Cycle

Detection

Detection Item

MIL

Note

11-12

Fuel and Emissions Systems

P2227 (13)

Barometric Pressure (BARO) Sensor Circuit Range/Performance
Problem

ON

(see page 11-176)

P2228 (13)

Barometric Pressure (BARO) Sensor Circuit Low Voltage

ON

(see page 11-177)

P2229 (13)

Barometric Pressure (BARO) Sensor Circuit High Voltage

ON

(see page 11-177)

P2238 (48)

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS

Circuit Low Voltage

ON

(see page 11-178)

P2252 (48)

Air Fuel Ratio (A/F) Sensor (Sensor 1) AFS

Circuit Low Voltage

ON

(see page 11-179)

P2270 (63)

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Lean

ON

(see page 11-181)

P2271 (63)

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2))
Circuit Signal Stuck Rich

ON

(see page 11-181)

P2413 (12)

Exhaust Gas Recirculation (EGR) System Malfunction

ON

(see page 11-363)

P2422 (117)

Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed
Malfunction

ON

(see page 11-402)

P2610 (132)

Engine Control Module (ECM)/Powertrain Control Module (PCM)
Ignition Off Internal Timer Malfunction

ON

(see page 11-182)

P2646 (22)

Rocker Arm Oil Pressure Switch Circuit Low Voltage

ON

(see page 11-284)

P2647 (22)

Rocker Arm Oil Pressure Switch Circuit High Voltage

ON

(see page 11-287)

P2648 (21)

Rocker Arm Oil Control Solenoid Circuit Low Voltage

ON

(see page 11-289)

P2649 (21)

Rocker Arm Oil Control Solenoid Circuit High Voltage

ON

(see page 11-291)

P2A00 (61)

Air Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Range/Performance
Problem

ON

(see page 11-182)

U0028 (126)

F-CAN Malfunction (BUS-OFF (Engine Control Module (ECM)/
Powertrain Control Module (PCM)))

ON

(see page 11-183)

U0122 (126)

F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Vehicle Stability Assist (VSA) Modulator-
Control Unit)

OFF

(see page 11-184)

U0131 (126)

F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Electrical Power Steering (EPS) Control Unit)

OFF

(see page 11-186)

U0155 (126)

F-CAN Malfunction (Engine Control Module (ECM)/Powertrain
Control Module (PCM)-Gauge Control Module)

ON

(see page 11-188)

U0300 (131)

PGM-FI System and A/T System Program Version Mismatch

ON

(see page 11-190)

NOTE:

• The above DTCs are indicated when the PGM-FI system is selected with the HDS.
• Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T

system, and check for automatic transmission DTCs.

: These DTCs are indicated by a blinking MIL when the SCS line is jumped with the HDS.
1: A/T
4: K20Z2 engine
6: with VSA

4

6

1

08/08/21 14:12:36 61SNR030_110_0012

SNR9A00A20300000000HBAT01

Symptom

Diagnostic procedure

Also check for

11-13

Symptom Troubleshooting Index

When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.









Engine will not start
(MIL works OK, no DTCs set)

1.
2.
3.
4.

Test the battery (see page 22-67).
Test the starter (see page 4-9).
Check the fuel pressure (see page 11-325).
Troubleshoot the fuel pump circuit (see page 11-318).

Low compression
No ignition spark
Intake air leaks
Locked up engine
Broken cam chain
Fuel contamination

Engine will not start
(MIL comes on and stays on,
no DTCs set)

Troubleshoot the DLC circuit (see page 11-204).

MIL comes on and stays on,
or never comes on at all, no
DTCs set

Troubleshoot the MIL circuit (see page 11-203).

Engine will not start
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes)

Check the immobilizer system (see page 22-321).

Engine starts but stalls
immediately
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes)

Check the immobilizer system (see page 22-323).

Engine is hard to start
(MIL works OK, no DTCs set)

1.
2.
3.

Test the battery (see page 22-67).
Check the fuel pressure (see page 11-325).
Clean the throttle body (see page 11-344).

Low compression
Intake air leaks
Fuel contamination
Weak spark

Cold fast idle too low
(MIL works OK, no DTCs set)

1.

2.
3.

Do the ECM/PCM idle learn procedure (see page
11-310).
Check the idle speed (see page 11-309).
Clean the throttle body (see page 11-344).

Cold fast idle too high
(MIL works OK, no DTCs set)

1.

2.
3.

Do the ECM/PCM idle learn procedure (see page
11-310).
Check the idle speed (see page 11-309).
Do the throttle position learning check (see page
11-343).

Intake air leaks

Idle speed fluctuates
(MIL works OK, no DTCs set)

1.

2.
3.
4.

Do the ECM/PCM idle learn procedure (see page
11-310).
Check the idle speed (see page 11-309).
Do the carbon accumulation check (see page 11-343).
Troubleshoot the A/C signal circuit (see page 11-306).

Incorrect valve
timing or clearance
adjustment
Intake air leaks

After warming up, idle speed
is below specification without
load
(MIL works OK, no DTCs set)

1.

2.

Troubleshoot the alternator FR signal circuit
(see page 11-307).
Do the carbon accumulation check (see page 11-343).

Incorrect valve
timing or clearance
adjustment

After warming up, idle speed
is above specification without
load
(MIL works OK, no DTCs set)

1.

2.

Troubleshoot the alternator FR signal circuit
(see page 11-307).
Inspect the APP sensor (see page 11-268).

Intake air leaks

08/08/21 14:12:36 61SNR030_110_0013

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