P17EF
Ratio Monitoring Shift 2-1
P17EF is an OBD-II diagnostic trouble code meaning: Ratio Monitoring Shift 2-1. Common causes: low transmission fluid level, worn clutches or other gearbox components. Estimated repair cost: $17–167.
Symptoms
- Erratic gear shifting
- Delays when switching from 2nd to 1st gear
- Jerks or jolts when shifting
- Increased engine speed when switching
- Check Engine Light Illuminates
Causes
- Low transmission fluid level
- Worn clutches or other gearbox components
- Shift solenoids malfunction
- Problems with speed or position sensors
- Transmission control unit malfunction
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the gearshift solenoids
- Check speed and position sensors
- Scan the transmission control unit for errors
- If necessary, replace worn transmission components
Related codes
FAQ
What does the P17EF code mean?
P17EF is an OBD-II diagnostic trouble code that indicates: Ratio Monitoring Shift 2-1
What causes a P17EF error code?
The most common causes of P17EF include: Low transmission fluid level; Worn clutches or other gearbox components; Shift solenoids malfunction; Problems with speed or position sensors.
How do I fix a P17EF diagnostic trouble code?
To fix P17EF: Check the level and condition of the transmission fluid. Diagnose the gearshift solenoids. Check speed and position sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P17EF?
Yes, but get it checked soon
How much does it cost to fix P17EF?
The estimated repair cost for P17EF is $17–167. Actual cost depends on your vehicle, location, and labor rates.
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