2012 Cadillac CTS-V Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2012 Cadillac CTS-V
Never overpay. Check prices with our estimator
Ask a mechanic in our community
2012 Cadillac CTS-V ProblemsReduced Power and Check Engine Light
The throttle position sensor (TPS) on the Cadillac CTS-V is notorious for failure which causes:
- Check engine light
- Reduced Power message
- OBD trouble code P2135
This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.
To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.
I purchased a 2012 Red CTS-V off the lot of a Houston area Cadillac dealer. Shortly after purchasing the car, I heard a rattle when accelerating on to the highway. I immediately set up an appointment to the dealer to have it looked at. When speaking to the service advisor, he asked if I put "regular" gas in the tank (off to a REAL bad start). I stated I knew about the corvette pushrod technology and the eaton supercharger screwed on the engine...