C1247 code in owner complaints

Code C1247 is named in 31 US owner complaints. Models: 4, model years 2003–2013.

There is little data for this code or its meaning is ambiguous, so this page is not indexed.

What the code means

This is a manufacturer-specific code: the meaning depends on the make and sometimes on the year.

How to read C1247: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 1 marks a manufacturer code whose meaning is set by the make; the last three characters 247 identify the specific fault.

ABS/ESC codes: wheel speed sensors, the ABS hydraulic unit and pump, brake booster, pressure and yaw sensors. A hit to a wheel or suspension often damages the wheel speed sensor or its wiring, so on a damaged car this code is a reason to inspect the hub, knuckle and control arms, not just swap the sensor.

Key figures

Complaints with this code: 31
Models: 4
Model years: 2003–2013

Which models and years

Models whose owners name this code (4). Years link to the model year problems page.

Model	Years	Complaints
Toyota Sequoia	2003, 2004, 2005, 2006	20
Toyota Prius	2004, 2005, 2008, 2012, 2013	7
Toyota Camry Hybrid	2008, 2009	2
Toyota Sequoia SR5	2003	2

Components named together with the code

Component as the owner filed it (one complaint can list several).

Service brakes 23
Electronic stability control 11
Vehicle speed control 8
Electrical system 3
Exterior lighting 2
Engine 1
Powertrain 1
Seat belts 1

Complaints by model year

2003 9
2004 6
2005 9
2006 2
2008 2
2009 1
2012 1
2013 1

What to do if an auction car has this code

Inspect the wheel and suspension on the impact side: the wheel speed sensor is often damaged together with the hub or knuckle.
Check whether the ABS and ESC lights stay on after start-up.
After replacing sensors or the hydraulic unit, bleeding and scan tool adaptation may be required.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

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 booster and pump assy, needed.
Toyota Prius 2012 · 2021-03
When driving the back light an traction control light come in brake light stays on an it says codes C1203 C1223 C1247 also saying the abs sensor on master cylinder open circuit also has a code fro 0dtc had it checked out on 7/1/2019
Toyota Sequoia SR5 2003 · 2019-07
My vehicle has an issue with the abs skid control. When the mechanic ran the check it came back with error codes C1203, C1223, C1247. I purchased hated this vehicle because I have a growing family and I needed the third row seating.the problem with the braking system happens when I have to stop quickly, which is a a…
Toyota Sequoia 2003 · 2016-07

Related codes

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.