Acura MDX Obd-II Error (fault) Codes List

2001 ENGINE PERFORMANCE Acura Self-Diagnostics.

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no fault codes, or only pass codes, exist after entering self-diagnostics, proceed to TROUBLE SHOOTING – NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).

SELF-DIAGNOSTIC SYSTEM
NOTE: The Powertrain Control Module (PCM) may be referred to as Engine Control Unit (ECU).
WARNING: During self-diagnostics, only check ECU (PCM) fuse specified. ECU (PCM) fuse No. 6 (15-amp) located in underdash fuse/relay box.

SELF-DIAGNOSTIC SYSTEM
NOTE: The Powertrain Control Module (PCM) may be referred to as Engine Control Unit (ECU).
WARNING: During self-diagnostics, only check ECU (PCM) fuse specified. ECU (PCM) fuse No. 6 (15-amp) located in underdash fuse/relay
box.

MALFUNCTION INDICATOR LIGHT (MIL)
As a bulb check, the Malfunction Indicator Light (MIL) will come on whenever ignition is on and engine is not running. The MIL will also come on whenever a system failure is detected, and a corresponding trouble code will set in PCM memory.

Hard Failures
Hard failures cause the malfunction indicator light to come on and remain on until the problem is repaired. If the light comes on and remains on (light may flash) during vehicle operation, determine
cause of malfunction by following the appropriate code retrieval procedures. If a sensor fails, the PCM will use a substitute value in its calculations to continue engine operation. In this condition, known as limp-in mode, the vehicle will run but driveability will not be optimum.

Intermittent Failures
Intermittent failures may cause the MIL to flicker or glow and go out after the intermittent fault goes away. However, the corresponding trouble code will be retained in PCM memory. If the related fault does not reoccur within a certain time, the related trouble code will be erased from PCM memory. Intermittent failures may be caused by sensor, connector, or wiring problems. See INTERMITTENTS in TROUBLE SHOOTING – NO CODES article.

As a bulb check, the Malfunction Indicator Light (MIL) will come on whenever ignition is on and engine is not running. The MIL will also come on whenever a system failure is detected, and a corresponding trouble code will set in PCM memory.

Hard Failures
Hard failures cause the malfunction indicator light to come on and remain on until the problem is repaired. If the light comes on and remains on (light may flash) during vehicle operation, determine
cause of malfunction by following the appropriate code retrieval procedures. If a sensor fails, the PCM will use a substitute value in its calculations to continue engine operation. In this condition, known as limp-in mode, the vehicle will run but driveability will not
be optimum.

Intermittent Failures
Intermittent failures may cause the MIL to flicker or glow and go out after the intermittent fault goes away. However, the corresponding trouble code will be retained in PCM memory. If the related fault does not reoccur within a certain time, the related trouble code will be erased from PCM memory. Intermittent failures may be caused by sensor, connector, or wiring problems. See INTERMITTENTS in TROUBLE SHOOTING – NO CODES article.

Language: English
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Pages: 55

Acura MDX Obd-II Error (fault) Codes List

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