The P0853: Drive Switch Input Circuit refers to an issue with the drive switch input circuit, which may prevent the vehicle from recognizing the drive mode. This can lead to problems with starting, shifting, or proper transmission function. The cause could be a faulty switch, wiring issues, or a malfunction in the transmission control module (TCM).
P0853 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0853: Drive Switch Input Circuit |
| Is it serious? | Yes, this can affect the ability to select the drive mode, causing shifting problems. |
| Possible causes | – Faulty drive switch input circuit – Wiring or connector issues – Faulty transmission control module (TCM) |
| How to diagnose? | – Test the drive switch input circuit – Inspect wiring and connectors – Replace faulty components if needed |
P0853 Meaning
The P0853: Drive Switch Input Circuit code indicates that there is a fault in the circuit responsible for transmitting the signal from the drive mode switch. If this circuit is compromised, the vehicle may not be able to recognize when it is in drive mode, which can lead to starting or shifting issues.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional related codes that may provide further insights into the issue. | OBD-II Scanner |
| Inspect Drive Switch | Visually inspect the drive switch for any signs of damage, wear, or misalignment. | Flashlight, Safety Gloves |
| Test the Drive Switch Input Circuit | Use a multimeter to test the drive switch input circuit for proper signal transmission and voltage. | Multimeter |
| Check Wiring and Connectors | Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections that could cause issues with the input circuit. | Flashlight, Multimeter |
| Replace Faulty Components | If the switch, wiring, or connectors are faulty, replace the necessary components to restore proper function. | Replacement Parts, Basic Tools |
| 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 ensure proper operation. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the system to confirm that the P0853 code does not return. | OBD-II Scanner |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko