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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.
ABS code not check engine light code .
DTC C0201 00: Antilock Brake System (ABS) Enable Relay Contact Circuit
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Circuit/System Verification
With scan tool installed, clear the DTCs then drive the vehicle in a straight line at a speed greater than 20 km/h (13 mph). If the DTC did not set as a current DTC see diagnostic aids.
Circuit/System Testing
Test for an open or a short to ground in the battery positive voltage circuit to the EBCM. Verify no open or a short to ground is found.
Test the EBCM ground circuit, an open or high resistance.
? If an open or a short to ground is found, repair the circuit.
Replace the EBCM assembly.
DTC C0201 (Equal to or over 8600 GVW)
The system relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids and to the Antilock Brake System (ABS) pump motor. When the relay contacts close, the EBCM monitors the voltage supplied to the valve solenoids and compares this voltage to monitored ignition voltage.
Action Taken When the DTC Sets
• The EBCM disables the ABS/DRP.
• The ABS indicator turns ON.
• The brake warning indicator turns ON
If your amber ABS lamp and the red "parking brake" warning lamp illuminate together without any prior pump constantly running problem; the pump motor wires are most likely broken.
The heat shrink tubing that seals the red/black power leads to the motor may have allowed water to enter. The copper conductor turns into a powdery green copper oxide over time due to electrolysis as a small current is applied to the motor all times (even when vehicle is off). The wires will look perfectly intact on the outside even though the copper conductor has been destroyed. The associated error codes will either be C0267 or C0268.
Initial problems will be an intermittent amber ABS and red BRAKE lamp illuminating simultaneously. Over time, the lamps will stay on constantly. In any of the circumstances, you have lost your ABS at all times... even when the lamps are off during the intermittent stage of the system failure.
Dealer specifies pump assembly must be replaced. Not necessary.
The wires can be resoldered to the motor terminal block and resealed with new heat shrink tubing and sensor safe silicone. Do not remove the motor from the pump housing as it is difficult to align the eccentric cam on the motor shaft with the pump mechanism.
This is a common problem that can be solved by resoldering the pump power leads. If the pump runs all the time and the red "BRAKE" lamp has illuminated after pulling the ABS fuse or unplugging the motor; the EBCM (ABS control module) will have to be rebuilt. This can be done for $100.
Both pump motor failure and EBCM failure can be repaired without costly replacement
P0300 is a random engine misfire code . could be a few different thing's causing this, low fuel pressure , low fuel volume , vacuum leak's , dirty fuel injectors . dirty fuel filter etc...
DTC C0267 or C0268 and C067 or C068 ( EBCM is the electronic brake control module )
The EBCM applies the ground needed for pump motor activation. The low side of the pump motor has a feedback circuit to the EBCM. When the pump motor is commanded OFF and at rest, feedback voltage is high. When the pump motor is winding down after being commanded ON and then OFF, feedback voltage is low. The EBCM monitors this feedback voltage in order to determine if the motor is functioning properly.
DTC C0281 or C081
The stop lamp switch signal informs the electronic brake control module (EBCM) when the brake pedal is pressed.
Do you fix cars for a living ? If not your best bet is have a qualified repair shop fix it !
depends on the car im guessing that the chrysler one is the one ur looking forChrysler:ABS Pump Motor Control CircuitDodge:ABS Pump Motor Control CircuitJeep:ABS Pump Motor Control CircuitFord:LR ABS Valve coil short to ground.Mercury:LR ABS Valve coil short to ground.Lincoln:LR ABS Valve coil short to ground.Mazda:LR ABS Valve coil short to ground
C1218 - Pump Motor Circuit Shorted to Voltage or Motor Ground Open C1243 - BPMV Pump Motor Stalled /These are codes relating to your ABS system(antilock braking). It looks as though you may have a ABS system pump that has burned out. Replace the pump, not the module.
The C1214 error is related to the electronic brake traction control module (EBTCM) BPMV pump motor relay contact circuit open. Check the 40A ABS Maxifuse in the underhood electrical center. if blown change it, clear the DTC and if it blows again check for a short in the 1642 line or internal short in the BPMV.
When an ABS/TCS operation is required, the EBTCM activates the pump motor relay and battery power is provided to the pump motor. DTC errors are either H (history) or C (current) I usually clear the history and see if it sets again later. [email protected]
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