P0500

I have a 2005 Tacoma 4WD with 138000K that throws a P0500 code periodically. Speedo OK and trans shifting fine, just have the annoying light about every 30-40 mile or so. It also goes off by itself without clearing codes. I bought the truck 4 months ago and the dealer put new tires on it (30 inch) so I thought tire size could be an issue but I drove it 180 miles home and for 2 weeks following with no issues. Any ideas?

 

a quick look up says vehicle speed sensor...

 

Did you fix this?

 

theres a software update for this code on some years, it caused by a differance in input shaft speeds

 

P0500:

• Open in VSS+/VSS- harness circuit.
• Open in TCSS signal or TCSS signal return harness circuit.
• Short to GND in VSS harness circuit.
• Short to GND in TCSS harness circuit.
• Short to PWR in VSS harness circuit.
• Short to PWR in TCSS harness circuit.
• Open or short in the vehicle speed circuit(s) (VSC) between the PCM and appropriate control module.
• Damaged VSS or TCSS.
• Damaged wheel speed sensors.
• Damaged wheel speed sensor harness circuits.
• Damage in module(s) connected to VSC/VSS circuit.
• Damage drive mechanism for VSS or TCSS.

VSS = Vehicle Speed Sensor
TCSS = Transfer Case Speed Sensor

 

I plugged it into a Solus Ultra and got a few more codes C0210 C0215 for rear speed sensors. Tested them and they came back good, but they had a thick coating of paste-like oil on them. Hopefully cleaning that off fixes it

 

Cool, it's always nice when you find something suspicious...