A check engine light can be unsettling, especially for Mitsubishi owners. While a scanner is the ideal tool for diagnosing the issue, there are ways to read OBD2 codes without one. This article outlines several methods for retrieving diagnostic trouble codes (DTCs) on a Mitsubishi without a scanner, helping you understand the potential problem and decide on the next course of action.
Understanding Check Engine Light Severity
The color of your check engine light indicates the urgency of the problem:
- Solid Yellow/Orange: Indicates a non-urgent issue requiring attention. You can likely drive for a short period, but it’s best to diagnose the problem soon.
- Solid Red: Signifies a more serious problem that needs immediate attention. Driving is not recommended; seek professional help.
- Flashing Red: Signals a critical issue, often a misfire, that can cause severe engine damage. Pull over immediately and contact roadside assistance.
Reading OBD2 Codes Without a Scanner: Mitsubishi Methods
While a scanner provides the most accurate reading, these methods can help retrieve DTCs on some Mitsubishi models:
Method 1: Odometer Reset Button
- Press and hold the odometer reset button.
- While holding the reset button, press and hold the trip button.
- Turn the ignition to the “ON” position (don’t start the engine).
- Release both buttons.
- Observe the odometer display for any codes.
Method 2: Ignition Key Cycling
- Turn the ignition key “ON” then “OFF” three times, ending in the “ON” position.
- Watch the check engine light for a series of flashes. Count the flashes and pauses to decipher the code. Each flash represents a digit, and a longer pause separates digits. (e.g., five flashes, pause, three flashes = code 53).
Method 3: Paperclip Method (For OBD1 Systems)
- Note: This method applies only to older Mitsubishi models with OBD1 systems, not OBD2.
- Locate the diagnostic connector under the dashboard (usually a two-pin connector).
- Use a paperclip or jumper wire to connect the two pins.
- Turn the ignition “ON” (don’t start the engine).
- Observe the check engine light flashes as in Method 2.
Limitations and Professional Diagnosis
These methods may not work on all Mitsubishi models and years. The retrieved codes may be generic and not provide a precise diagnosis. Consulting a qualified Mitsubishi mechanic or using an OBD2 scanner is always recommended for accurate diagnosis and repair. A professional can interpret the codes, pinpoint the issue, and perform the necessary repairs to ensure your Mitsubishi runs smoothly and safely.
Conclusion
Understanding how to read OBD2 codes without a scanner on your Mitsubishi can provide valuable insight into potential car problems. While these methods can be helpful in a pinch, they are not a substitute for professional diagnosis. If your check engine light persists, consult a qualified mechanic for a comprehensive inspection and repair. Ignoring a check engine light can lead to more serious and costly damage down the road.
