Abs trouble codes

Have you checked the connectors in the wiring harnesses for the ABS unit and associated components for water intrusion or corrosion?

The codes that you've posted (details below) all point to a poor electrical connection in the circuit(s) or an open or short in the circuit(s). That could be either due to corrosion, liquid intrusion, a wiring harness rubbing against something hot or something that vibrates and has damaged the wiring.

If the wiring and connections are all intact and there are no opens, shorts to power or shorts to ground, the next think to look at would be the modules and/or sensors to make sure they're operating within spec.

U1003 Possible Causes:
*Faulty Anti-lock Brake System (ABS)
*Module Anti-lock Brake System (ABS)
*Module harness is open or shorted Anti-lock Brake System (ABS)
*Module circuit poor electrical connection

The Diagnostic Trouble Code (DTC) sets if the Anti-lock Brake System (ABS) Module fails to receive bus messages from the Dynamic Sensor for approximately 150 ms.

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C0020-1c Possible Causes:
*Faulty Anti-Lock Brake System (ABS) *Control Module Faulty Hydraulic Control Unit (HCU)
*Hydraulic Control Unit (HCU) harness is open or shorted Hydraulic Control Unit
*(HCU) circuit poor electrical connection

The Hydraulic Control Unit (HCU) consists of a valve body, pump motor, and inlet/outlets for the brake lines. The combined HCU and Antilock Brake System (ABS) module is located forward of the master cylinder.

The Anti-Lock Brake System (ABS) Module monitors the ABS Pump Motor. The ABS Module sets the OBDII code when the ABS Pump Motor is not to factory specifications.

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U0125 Possible Causes:
*Faulty Dynamics Sensor Dynamics Sensor
*Harness is open or shorted Dynamics
*Sensor circuit poor electrical connection

The Diagnostic Trouble Code (DTC) sets if the Anti-Lock Brakes System (ABS) Module fails to receive bus messages from the Dynamics Sensor.

'Year make model' needed in all questions.

ABS and MAF are the codes. You need a good auto-electrician.

U1002: Code Meaning, Causes, Symptoms, & Tech Notes

https://www.engine-codes.com > u1002
The Diagnostic Trouble Code (DTC) sets when the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) is not transmitting or receiving ...

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  U1002 NISSAN - Engine-Codes.com

  https://www.engine-codes.com > u1002_nissan
  'What is U1002 NISSAN code meaning? ... The Diagnostic Trouble Code (DTC) sets when the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) is ...

P0101 What Does Code P0101 Mean? P0101 definition: Mass Air Flow (MAF) Circuit/Performance Malfunction. Issue Severity: MODERATE - Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid internal engine failure.Feb 21, 2022

P0101 - Meaning, Causes, Symptoms, & Fixes - FIXD

C1130 NISSAN Code Engine Signal 1 - AutoCodes

https://www.autocodes.com > c1130_nissan
Aug 17, 2018 - The code means that the Anti-Lock Brake System (ABS) control unit has detected that there is a problem with the Engine Control Module (ECM). ' .

Take an have code's checked , do you know what those are ? DTC'S - diagnostic trouble codes stored in the abs control module . Anti-lock brake system , wheel speed sensor . nothing to do with base brake system .

The ABS EBCM anti-lock brake module is failing causing problems with the ABS pump running constantly, also will drain your battery.

1. Remove the ABS fuse to prevent ABS motor burn out.
2. You can still drive your vehicle with the module removed.
3. We recommend covering the exposed surface of the hydraulic control unit with aluminum foil to keep out water and dirt.

Common Failures:

• ABS Pump Always Running
• Codes: C0265, C0267, C0268
• Pump Motor Circuit trouble code
• Power Relay trouble code
• Valve Relay Trouble code
• Dump Valves (solenoids) trouble codes
• No Communication
• Intermediate power loss

http://www.myairbags.com/dtc-code-c0265-abs-ebcm-light/

Well the ABS light(Anti-lock Brake System) light when lit means the computer has stored a trouble code. Also, this means the ABS system is off-line. The brakes function as usual but have the possibility of locking up in a panic stop situation. So to turn off the light you should take it to a qualified shop that can diagnose the trouble code with a scan tool (most likely a wheel sensor) and give you an estimate for the repair. Get your ABS system working again!
I hope this helps you

You have water in the brake system, it boils and applies the brakes.
Different size tires will set a trouble code, but not apply brakes.

gm had a problem with the abs systems on their 1999 trucks and cars the sensor seat would corrode and move slightly enough to set off the low speed sensor of the abs usually goes off at 5mph and less and doesnt set off the abs trouble code need to remove the front wheels and brake assembly to access the hub and abs sensor also check hub to make sure its ok- in the mean time pull the fuse on the abs ur brakes will go to a normal brake without the abs meaning if u step on brake hard[panic brake] u can lock up tires

the abs light is on because the automatic braking system has a problem yes it is still safe to drive but if you go into a wet condition and slam on the brakes you might go into a spin without the abs to keep you straight.usually its a wheel bearing sensor that's bad but can also be the control module best to go over to a auto zone or advance auto parts to get it checked for free.hope this helps you please vote if so.

It is picking up a signal from one of the wheel sensors probably.

Go here to read files on ABS issues

http://autos.groups.yahoo.com/group/villagerquest/

• Anti-Lock Brake Warning Indicator Always On

• Fuse(s).
• Circuit.
• Hydraulic solenoid relay.
• Hydraulic pump motor relay.
• Brake anti-lock sensor(s).
• Hydraulic anti-lock actuator assembly.
• Anti-lock brake control module.

• GO to ABS Quick Test .

QT5 PERFORM ABS TROUBLE CODE RETRIEVAL

• Key OFF.
• Jump Pin 4 of the data link connector to ground.
  
  
  
  
• Key ON.
• Observe the anti-lock brake warning indicator.

NOTE: The first code to flash will be the start code (12). Also, each code is repeated three times before proceeding to the next trouble code.

Does the anti-lock brake warning indicator flash codes? Yes No RECORD code(s). GO to the following ABS Trouble Code Identification Chart in this section and PERFORM Pinpoint Test specified for first code retrieved. If indicator is illuminated constantly, GO to Pinpoint Test D1 . If indicator is not illuminated, GO to Pinpoint Test A1 .

abs relay some times go bad