P1657
1-4 Upshift Solenoid Control Circuit
P1657 is an OBD-II diagnostic trouble code meaning: 1-4 Upshift Solenoid Control Circuit. Common causes: open or short circuit in solenoid circuit, shift solenoid 1-4 malfunction. Estimated repair cost: $17–89.
Symptoms
- Incorrect gear shifting (skipping 2nd and 3rd gears)
- Hard gear shifts
- Switching to emergency mode of automatic transmission operation
- Check Engine Light Illuminates
- Reduced acceleration dynamics
Causes
- Open or short circuit in solenoid circuit
- Shift Solenoid 1-4 Malfunction
- Poor contact in solenoid connector
- Wiring harness damage
- Transmission control module (TCM) malfunction
How to Fix
- Check the integrity of the solenoid control circuit
- Check the solenoid resistance (compare with the norm)
- Inspect connectors and contacts for corrosion
- Replace shift solenoid 1-4 if necessary
- Check the operation of the TCM (diagnostic scanner)
Related codes
Error P1657 by Vehicle Brand
FAQ
What does the P1657 code mean?
P1657 is an OBD-II diagnostic trouble code that indicates: 1-4 Upshift Solenoid Control Circuit
What causes a P1657 error code?
The most common causes of P1657 include: Open or short circuit in solenoid circuit; Shift Solenoid 1-4 Malfunction; Poor contact in solenoid connector; Wiring harness damage.
How do I fix a P1657 diagnostic trouble code?
To fix P1657: Check the integrity of the solenoid control circuit. Check the solenoid resistance (compare with the norm). Inspect connectors and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1657?
Yes, but get it checked soon
How much does it cost to fix P1657?
The estimated repair cost for P1657 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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