C0168 code meaning
Right Rear ABS Inlet Solenoid Circuit Malfunction
What C0168 means
C0168 has no public trace: it is missing from the accessible J2012 tables, from the NHTSA bulletin index and from the manufacturer pages checked, where Saab for instance uses C2485 for the rear right valves. Taken at face value it covers the inlet solenoid of the right rear brake, which isolates that caliper from master cylinder pressure while the module regulates the wheel. Typical findings are a coil with an open winding, a short between coil and housing, or a corroded plug at the valve block. Toyota and Denso patented the self-test that checks each solenoid for these faults and then trips a cut-off relay, while MOTOR documents how the ATE module times test pulses per valve and shuts anti-lock down when one is wrong.
C0168 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor1.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0168
- ABS lamp on, often directly at key-on
- No anti-lock control on any wheel
Common causes of C0168
- Most likelyOpen winding in the rear right inlet coil
- PossibleShort between coil and housing
- PossibleCorroded plug at the valve block
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
ABS hydraulic unitABS control moduleSolenoid valve
What each part of C0168 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 68 | The exact fault in that area. |
What to do next
- Note C0168 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0168
What does C0168 mean?
C0168 means "Right Rear ABS Inlet Solenoid Circuit Malfunction". C0168 has no public trace: it is missing from the accessible J2012 tables, from the NHTSA bulletin index and from the manufacturer pages checked, where Saab for instance uses C2485 for the rear right valves. It is a generic code, so it means the same on every make.
Is it safe to drive with C0168?
Drive gently and only to a workshop. With C0168 the car can go into limp mode (reduced power) to protect itself.
Will C0168 fail an emissions test?
C0168 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0168 to fix?
Difficulty: hard. A typical repair takes 1.5 to 4 hours of work. This is a job for a workshop.
Will C0168 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.