The P0959: Auto Shift Manual Mode Circuit Intermittent refers to an issue where the auto shift manual mode circuit is experiencing intermittent connectivity or performance problems. This can cause inconsistent manual shifting and affect transmission performance.
P0959 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0959: Auto Shift Manual Mode Circuit Intermittent |
| Is it serious? | Yes, intermittent issues can lead to inconsistent manual shifting, affecting vehicle control. |
| Possible causes | – Intermittent issues with the auto shift manual mode circuit – Wiring or connector issues – Faulty auto shift manual mode module |
| How to diagnose? | – Test for intermittent faults in the circuit – Inspect wiring and connectors – Replace faulty components if needed |
P0959 Meaning
The P0959: Auto Shift Manual Mode Circuit Intermittent code indicates that the auto shift manual mode circuit is experiencing intermittent failures, leading to unreliable manual shifting. This can result from wiring problems, faulty connectors, or a malfunctioning control module.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional fault codes that may provide further information about the intermittent issue. | OBD-II Scanner |
| Test for Intermittent Faults | Use a multimeter or diagnostic tool to test for intermittent connectivity or performance failures in the auto shift manual mode circuit. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connectors | Visually inspect the wiring and connectors for loose connections, corrosion, or damage that could cause intermittent circuit problems. | Flashlight, Multimeter |
| Check the Control Module | Test the auto shift manual mode control module for intermittent operation. Replace it if it shows inconsistent functionality. | Diagnostic Tool, Replacement Module |
| Clear the Code and Test Drive | After repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to confirm the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the system to ensure the P0959 code does not return after the test drive. | OBD-II Scanner |
OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes
Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)