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Eric
Eric, Automotive Repair Shop Manager
Category: Acura
Satisfied Customers: 24670
Experience:  20+ yrs. experience as repair shop manager and technician.
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my 2003 acura mdx has a ABS light on. how do i correct thi

Resolved Question:

my 2003 acura mdx has a ABS light on. how do i correct this?
Submitted: 11 months ago.
Category: Acura
Expert:  Eric replied 11 months ago.

HI,

What are the ABS fault codes?
Customer: replied 11 months ago.

not sure how do i get those

Expert:  Eric replied 11 months ago.
HI,

Ok, this can only be done with a scan tool with ABS capabilities. There are around 25 ABS fault codes. Without knowing which is set, it would be a wild guess on whether it was one of 4 ABS wheel speed sensors or their reluctor rings, or a wiring harness fault, abs hydraulic unit fault, or ABS control module fault.

Once you have it scanned for fault codes and can post them here, I can further help in the exact diagnostic procedure and repair.
Customer: replied 11 months ago.

OK i will get those and get back to you thanks.

Expert:  Eric replied 11 months ago.
HI,

Ok, sounds good. I am here everyday of the week. To leave this open to reply back with the fault codes, just dont reply to this post now. That leaves it open for 7 days to reply back to
Eric, Automotive Repair Shop Manager
Category: Acura
Satisfied Customers: 24670
Experience: 20+ yrs. experience as repair shop manager and technician.
Eric and other Acura Specialists are ready to help you
Customer: replied 11 months ago.

p420 , p134, p2213

Expert:  Eric replied 11 months ago.
Hi,

Ok, these are powertrain codes for either engine, transmission or emission controls. The ABS codes are "C" codes.

P0420 is for the catalytic converter
P0134 is for the rear O2 sensor

The bad rear O2 sensor can set the P0420 as well, so this is repaired first and if the P0420 returns, then the catalytic converter is replaced.

P2213 is not a valid code for your acura. It is only for diesel engines, so may need to recheck that one.

Customer: replied 11 months ago.

13-1 and 68-1

Customer: replied 11 months ago.

2003 Acura 3.5RL 3.5 ABS (HONDA)


I/M Monitors


Since DTCs Cleared


Misfire Monitor ok
Fuel System Mon ok
Comp Component ok
Catalyst Mon ok
Htd Catalyst n/a
Evap System Mon inc
Sec Air System n/a
A/C Refrig Mon n/a
Oxygen Sens Mon ok
Oxygen Sens Htr ok
EGR/VVT Sys Mon ok


=====================


DTCs (Codes)


13-1 ABS


Left Front Wheel Speed Sensor Open Or
Short


CURRENT


---------------------


68-1 ABS


Brake Switch Malfunction


CURRENT


---------------------


P2251 ENG


Oxygen Sensor Negative Current Control
Circuit / Open Bank 1 Sensor 1


CURRENT 155-12


---------------------


P0420 ENG


Catalyst System Efficiency Below
Threshold Bank 1


CURRENT 165-1


FREQ REPORTED FIXES
1-Cleaned Catalytic
Converter(s)
2-Replaced Catalytic
Converter(s)
3-Replaced Oxygen
(O2) Sensor, Bank
1 Sensor 2


---------------------


P0134 ENG


Oxygen Sensor Circuit No Activity
Detected Bank 1 Sensor 1


CURRENT 151-7


---------------------


P0420 ENG


Catalyst System Efficiency Below
Threshold Bank 1


TEMP 165-1


FREQ REPORTED FIXES
1-Cleaned Catalytic
Converter(s)
2-Replaced Catalytic
Converter(s)
3-Replaced Oxygen
(O2) Sensor, Bank
1 Sensor 2


---------------------


P2251 MOD $09


Oxygen Sensor Reference Ground Circuit
Open Bank 1 Sensor 1


CONFIRMED


---------------------


P0420 MOD $09


Catalyst System Efficiency Below
Threshold Bank 1


CONFIRMED


FREQ REPORTED FIXES
1-Cleaned Catalytic
Converter(s)
2-Replaced Catalytic
Converter(s)
3-Replaced Oxygen
(O2) Sensor, Bank
1 Sensor 2


---------------------


P0134 MOD $09


Oxygen Sensor Circuit No Activity
Detected Bank 1 Sensor 1


CONFIRMED


---------------------


P0420 MOD $09


Catalyst System Efficiency Below
Threshold Bank 1


PENDING


FREQ REPORTED FIXES
1-Cleaned Catalytic
Converter(s)
2-Replaced Catalytic
Converter(s)
3-Replaced Oxygen
(O2) Sensor, Bank
1 Sensor 2


 

Expert:  Eric replied 11 months ago.
Hi,

for 13-1, check wiring harness for broken/loose wiring going to the left front wheel speed sensor. If ok, replace the sensor

for 68-1, do the brake lights work?
Customer: replied 11 months ago.

yes the brake lights work

Expert:  Eric replied 11 months ago.
HI,

Ok, you will need to do the following test.

Measure the voltage between the VSA control unit 47P connector terminal No. 15 and body ground.
Is there battery voltage when the brake pedal is pressed and less than 1 V when it is released?
YES - Check for loose terminals in the VSA control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, and recheck.
NO - Check for open between the brake pedal position switch and the VSA control unit 47P connector No. 15.
graphic


graphic
Eric, Automotive Repair Shop Manager
Category: Acura
Satisfied Customers: 24670
Experience: 20+ yrs. experience as repair shop manager and technician.
Eric and other Acura Specialists are ready to help you

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