C1241 on TOYOTA PRIUS — ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground

Q: "What does C1241 mean on a TOYOTA PRIUS?"

"C1241 indicates: ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground. This is a chassis code. 2 TOYOTA PRIUS owners have reported this to NHTSA."

Q: "What are the most common causes of C1241 on TOYOTA PRIUS?"

"Based on 2 NHTSA reports, the most commonly cited components are: Service Brakes. These percentages are based on the component field in owner complaints."

Q: "Is C1241 serious on my TOYOTA PRIUS?"

"Of 2 NHTSA reports for this code on TOYOTA PRIUS, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my TOYOTA PRIUS shows C1241?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What C1241 Means on Your TOYOTA PRIUS

C1241 is a diagnostic trouble code indicating: ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 TOYOTA PRIUS owners have reported this issue to NHTSA across model years 2010-2012. Most reports come from the 2010, 2012 model years. The most commonly reported component is Service Brakes (100.0% of reports).

Real TOYOTA PRIUS Owner Reports

Source: NHTSA Complaints Database

"hope this message finds you well. I am reaching out regarding a potential recall issue with my 2010 Toyota Prius. The vehicle's VIN is [XXX] , and I am currently located in the Austin area."

— 2010 TOYOTA PRIUS owner · SERVICE BRAKES · Filed 10/21/2024

"My toyota prius 2012 with 95k mil. abs, traction and brake lights came on while driving on highway, the breaking wasn't like used to be, it was mushy after the warning lights, took it to toyota dealership they estimated $3500 for the brake replacement the fault codes c1241, c1247, c1391 found break"

— 2012 TOYOTA PRIUS owner · SERVICE BRAKES · Filed 03/30/2021

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'10

1

'12

Common Causes on TOYOTA PRIUS

Based on NHTSA complaint component analysis for this vehicle.

SERVICE BRAKES 100%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does C1241 mean on a TOYOTA PRIUS? ▾

C1241 indicates: ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground. This is a chassis code. 2 TOYOTA PRIUS owners have reported this to NHTSA.

What are the most common causes of C1241 on TOYOTA PRIUS? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Service Brakes. These percentages are based on the component field in owner complaints.

Is C1241 serious on my TOYOTA PRIUS? ▾

Of 2 NHTSA reports for this code on TOYOTA PRIUS, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my TOYOTA PRIUS shows C1241? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

C1241 on Other Vehicles

TOYOTA HIGHLANDER

4 reports

→ All codes reported on TOYOTA PRIUS