How to Fix B1308 Oil Level Switch Circuit Short to Ground

Introduction

If you’re experiencing the B1308 error code on your car, it means that there’s a problem with the oil level switch circuit. This can be a frustrating issue to deal with, but fortunately, it’s something that you can fix yourself with a little bit of know-how. In this article, we’ll walk you through the steps you need to take to fix the B1308 error code and get your car running smoothly again.

What is the B1308 Error Code?

The B1308 error code is a diagnostic trouble code (DTC) that indicates a problem with the oil level switch circuit. This circuit is responsible for monitoring the oil level in your car’s engine and sending that information to the engine control module (ECM). When the ECM detects a short to ground in the oil level switch circuit, it triggers the B1308 error code.

Step-by-Step Guide to Fixing the B1308 Error Code

Step 1: Check the Oil Level

Before you start troubleshooting the oil level switch circuit, it’s important to make sure that your car has enough oil. Check the oil level using the dipstick and add more oil if necessary. If the oil level is low, it can cause the oil level switch circuit to malfunction and trigger the B1308 error code.

Step 2: Inspect the Oil Level Switch

The next step is to inspect the oil level switch itself. This switch is usually located on the side of the engine block and is connected to the oil pan by a wire. Check the wire for any signs of damage or wear, and make sure that it’s securely connected to the switch. If the wire is damaged, you’ll need to replace it.

Step 3: Test the Oil Level Switch Circuit

To test the oil level switch circuit, you’ll need a multimeter. Set the multimeter to measure resistance and touch the probes to the terminals on the oil level switch. The multimeter should read a resistance of around 10 ohms. If the resistance is significantly higher or lower than this, it indicates a problem with the circuit.

Step 4: Check the Wiring Harness

If the oil level switch circuit is functioning properly, the next step is to check the wiring harness that connects the switch to the ECM. Look for any signs of damage or wear, and make sure that all of the connections are secure. If you find any damage, you’ll need to replace the wiring harness.

Step 5: Replace the Oil Level Switch

If all of the previous steps have failed to fix the B1308 error code, the final step is to replace the oil level switch itself. This is a relatively simple process that involves disconnecting the old switch and connecting the new one. Make sure to follow the manufacturer’s instructions carefully and double-check all of your connections before starting the engine.

Conclusion

Fixing the B1308 error code may seem daunting at first, but with a little bit of patience and know-how, it’s something that you can easily do yourself. By following the steps outlined in this article, you’ll be able to diagnose and fix the problem with your car’s oil level switch circuit and get back on the road in no time.

FAQs

1. Can I drive my car with the B1308 error code?

It’s not recommended to drive your car with the B1308 error code. This code indicates a problem with the oil level switch circuit, which can cause damage to your engine if left unchecked.

2. How much does it cost to fix the B1308 error code?

The cost of fixing the B1308 error code will depend on the cause of the problem. If it’s a simple fix like replacing a wire or the oil level switch, it shouldn’t cost too much. However, if the problem is more complex, it could be more expensive.

3. Can I fix the B1308 error code myself?

Yes, you can fix the B1308 error code yourself if you have some basic knowledge of car mechanics and the right tools. However, if you’re not comfortable working on your car, it’s always best to take it to a professional mechanic.