When it comes to repairing your Dodge vehicle, you may encounter the C1020 code. The C1020 code stands for a left rear wheel speed sensor circuit, and can be a cause of concern when trying to diagnose a problem with your vehicle. This code can be caused by a variety of issues, such as wiring harness and terminal damage, a shorted circuit, or a malfunctioning left rear wheel speed sensor or anti-lock brake module. To help identify and solve the issue, it is important to understand what can cause the C1020 code and how to diagnose it properly.
Causes and Solutions for the Dodge C1020 Code
| Cause | Solution |
|---|---|
| WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE | Check for any physical damage, corrosion, or rust in the wiring harness, terminal, and connector. |
| (B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN | Run a diagnostic test of the (B4) Left Rear WSS 12 Volt Supply Circuit. |
| (B3) LEFT REAR WSS SIGNAL CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN | Run a diagnostic test of the (B3) Left Rear WSS Signal Circuit. |
| (B3) LEFT REAR WSS SIGNAL CIRCUIT SHORTED TO THE (B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT | Run a diagnostic test of both the (B3) Left Rear WSS Signal Circuit and the (B4) Left Rear WSS 12 Volt Supply Circuit. |
| LEFT REAR WSS | Replace the Left Rear WSS. |
| ANTI-LOCK BRAKE MODULE | Replace the anti-lock brake module. |
WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
If the Dodge C1020 Code is caused by wiring harness, terminal, or connector damage, the first step is to inspect the wiring harness, terminal, and connector for any signs of physical damage, corrosion, or rust. If any of these are present, the wiring harness, terminal, and connector must be replaced.
(B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN
If the Dodge C1020 Code is caused by the (B4) Left Rear WSS 12 Volt Supply Circuit being shorted to voltage, ground, or open, then a diagnostic test of the (B4) Left Rear WSS 12 Volt Supply Circuit must be performed. If the test reveals a shorted circuit, then the wiring harness, terminal, and connector must be replaced.
(B3) LEFT REAR WSS SIGNAL CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN
If the Dodge C1020 Code is caused by the (B3) Left Rear WSS Signal Circuit being shorted to voltage, ground, or open, then a diagnostic test of the (B3) Left Rear WSS Signal Circuit must be performed. If the test reveals a shorted circuit, then the wiring harness, terminal, and connector must be replaced.
(B3) LEFT REAR WSS SIGNAL CIRCUIT SHORTED TO THE (B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT
If the Dodge C1020 Code is caused by the (B3) Left Rear WSS Signal Circuit being shorted to the (B4) Left Rear WSS 12 Volt Supply Circuit, then a diagnostic test of both the (B3) Left Rear WSS Signal Circuit and the (B4) Left Rear WSS 12 Volt Supply Circuit must be performed. If the test reveals a shorted circuit, then the wiring harness, terminal, and connector must be replaced.
LEFT REAR WSS
If the Dodge C1020 Code is caused by a malfunctioning Left Rear WSS, then the Left Rear WSS must be replaced.
ANTI-LOCK BRAKE MODULE
If the Dodge C1020 Code is caused by a malfunctioning anti-lock brake module, then the anti-lock brake module must be replaced.
Conclusion: Identifying and Troubleshooting the Dodge C1020 Code
The Dodge C1020 Code can be caused by a variety of issues, such as wiring harness and terminal damage, a shorted circuit, or a malfunctioning left rear wheel speed sensor or anti-lock brake module. To identify and troubleshoot the issue, it is important to understand what can cause the C1020 code and how to diagnose it properly. Proper diagnosis of the Dodge C1020 Code requires an understanding of the causes and solutions outlined in the table above. By following the steps above, you can quickly and accurately diagnose the Dodge C1020 Code and take the necessary steps to repair your vehicle.
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