Biddles

All of a sudden I got two CEL's...

C1223 - Malfunction in Anti Lock Brake System Control System
C1241 - Low Battery Positive Voltage or Abnormally High Battery Positive Voltage


Just got this car and have 10 days to get an inspection, and it won't pass. A damn shame because the guy assured me she "needs nothing". So does anyone here have experience with this or suggestions?

62Fender

Before you do anything, I'd see if "guy" will cover the cost of repair, particularly since he gave your car a clean bill of health.


C1223 - Left Rear Wheel Speed Sensor Input Signal Is Zero

Possible causes

• Faulty Hub Assembly (Left Rear Wheel Speed Sensor is part of hub assembly)
• Faulty Left Rear Wheel Speed Sensor
• Left Rear Wheel Speed Sensor harness is open or shorted
• Left Rear Wheel Speed Sensor circuit poor electrical connection

Possible symptoms

• Anti-Lock Brake System (ABS) Warning Light ON
• Engine Light ON (or Service Engine Soon Warning Light)

C1223 Description

As the wheel spins, the wheel speed sensor produces an AC signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed. The EBCM will set the OBDII code when the sensor is not to factory specifications.

62Fender

C1241 TOYOTA - Low Battery Positive Voltage

Possible causes

• Low Battery Charge
• Faulty Battery
• Faulty Charging System
• Power source circuit

Possible symptoms

• Anti-Lock Brake System (ABS) Warning Light ON
• Engine Light ON (or Service Engine Soon Warning Light)

C1241 Toyota Description

If there is a problem with the brake actuator assembly (Skid Control Electronic Control Unit) power supply circuit, the skid control ECU outputs the Diagnostic Trouble Code (DTC) and prohibits under the fail safe function.If the voltage supplied to the terminal is not within the DTC detection threshold due to malfunction in such as the battery and alternator circuit, this DTC is stored.


*** If you live near an AutoZone, you can probably get a battery//alternator test for free.

Biddles

Battery/Alternator/Starter checked out fine. Not really sure how to proceed on this one as no warning lights are on now. A glitch perhaps? I notice the "Maintenance Reqd" light has come on once or twice but oil looks good and I thought that's all that light was for...

62Fender

Yeah, the "maintenance req'd" light is just a reminder to change oil and or rotate tires, etc. Your owners manual has instructions on setting the desired interval.

You may be right about a glitch. Probably wouldn't hurt to eyeball the left rear speed sensor and cable connector.