OBD code C0027 indicates an issue with the Left Front Wheel Speed Sensor in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
The cause could be a faulty sensor, open/shorted sensor harness, or poor electrical connection.
This is a moderate issue that should be addressed promptly.
A possible fix is to inspect and repair any damaged components or wiring connections related to the Left Front Wheel Speed Sensor.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the c0027 OBD Code
The vehicle displays a warning light indicating an issue with the front wheel speed sensor.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of ABS functionality.
- Brake pedal may feel different during braking.
- Unusual noises from the ABS system.
Causes of the c0027 OBD Code
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Code C0027 typically indicates an issue with the rear wheel speed sensor circuit.
- C0027 can be caused by a Faulty Left Front Wheel Speed Sensor.
- A Left Front Wheel Speed Sensor harness that is open or shorted.
- A Left Front Wheel Speed Sensor circuit with a poor electrical connection.
Fixing Error Code c0027 Step By Step
Repairing fault code C0027 involves inspecting and potentially replacing the right rear wheel speed sensor.
- To fix OBDII code C0027, start by reviewing the possible causes mentioned above.
- Visually examine the corresponding wiring harness and connectors for any damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- Repair or replace any damaged components found during the inspection.
- Clear the fault code using a scan tool and test drive the vehicle to ensure the issue has been resolved.
- If the code returns, further diagnostics may be necessary to pinpoint the exact cause of the C0027 fault code.
Cost Of Fixing c0027 Fault Code
Diagnosing and repairing fault code C0027 may involve inspecting and servicing the vehicle’s wheel speed sensor system.
The cost to diagnose and fix OBD code C0027 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Costs depend on labor rates, shop fees, and the complexity of the ABS system in the vehicle.
Details of the c0027 OBD Code
C0027 code indicates a problem with the left rear wheel speed sensor circuit.
OBD code C0027 means Left Rear Wheel Speed Sensor Circuit Range/Performance on a vehicle.
This code is triggered by the Electronic Brake Control Module (EBCM) when it detects a discrepancy in the signal from the left rear wheel speed sensor.
The system involved is the Antilock Brake System (ABS), which relies on wheel speed sensor inputs to determine wheel speed and prevent wheel lockup during braking.
Mechanic’s Tech Notes
Code C0027 relates to a fault in the right rear wheel speed sensor circuit.
OBDII code C0027 typically indicates a problem with the transmission control module (TCM).
To diagnose this, you can use a voltmeter to check the TCM’s power and ground connections for proper voltage levels.
Additionally, a scan tool can be used to confirm if the TCM is communicating over the Controller Area Network (CAN) network.
If the wiring harness or connectors appear visually damaged, inspect them closely for issues like broken, bent, or corroded pins.
In some cases, reprogramming or reflashing the TCM may be necessary to resolve the fault.
FAQ
OBD code C0027 indicates an issue with the Left Front Wheel Speed Sensor. Check sensor, harness, and connections for faults to resolve ABS and Engine Light warnings.
Common symptoms for OBD code C0027 include ABS warning light on, engine light on, caused by faulty left front wheel speed sensor or related wiring issues. Fix: Inspect and repair wiring/connectors.
Diagnose and repair OBD code C0027 by checking the left front wheel speed sensor, harness, and connections for faults. Inspect for damage or poor connections.
Wrap Up
If your ABS light is on and you see OBDII code c0027, it may indicate an issue with the right rear wheel speed sensor circuit.
This could be caused by a faulty wheel speed sensor, damaged wiring, or poor connections.
To address OBDII code c0027, start by inspecting the wiring harness and connectors related to the right rear wheel speed sensor.
Look for any signs of damage, corrosion, or loose connections.
Test the sensor itself for proper operation and replace if necessary.
