C1201

ABS Inlet Valve Coil LF Circuit Short To Ground

DTC C1201, sometimes indicated as C120100 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle chassis.

  • C1201: ABS Inlet Valve Coil LF Circuit Short To Ground

See Also: Related Error Codes
DTC Trouble Code Search
Consumer Complaints for this DTC



2015 TOYOTA TUNDRA with 113900. miles

When at 55 degrees or below getting a misfire on cylinder 2, engine light on with traction control off on my display (not the actual icon). Code reader says P0302, C1201, and B1242. Engine light starting flashing, juddering really bad when accelerating to 70mph. When at 60 degrees or higher everything is normal no engine light on or any juddering.
ENGINE, ENGINE ELECTRICAL SYSTEM SERVICE BRAKES ELECTRICAL SYSTEM SERVICE BRAKES



2013 TOYOTA VENZA with 59460.0 miles

On hwy vehicle wouldn't stop or steer, lost all power and control. Came to stop in the median, had to have towed, cause is listed as :173600410, C1201, C1241, C1441 Toyota of irving called to inform me that they were not able to recreate the problem and that the vehicle is operating as designed by the manufacturer.
VEHICLE SPEED CONTROL, STEERING SERVICE BRAKES



2010 TOYOTA TUNDRA with 1097.0 miles

I purchased on 2010 Tundra double cab 4x4 with a 5.7 v-8 engine on august 1, 2010. On several occasions my 2010 Tundra has shut down while being driven. The first serious safety problem occurred on 08/26/2010 (1,097 miles) while being driven about 10-15 mph. The check engine light came on and the 4x4 lo and rsca lights were flashing while power was lost/reduced to engine/tranmission. On 8/27/2010, the selling dealer checked the connections after receiving codes C1201 and P060A and claimed the vehicle was fixed. The second time was on 09/26/2010 (2,312 miles) i was driving 55-60 mph when the lights came on as before and i lost/reduced power to the engine/transmission almost causing an accident. This time the a local dealer verified that code P060A returned and claimed the cause was a bad ecm processor. They replaced the ecm processor claiming the vehicle was fixed. The third time was on october 31, 2010, (2,480 miles) the vehicle was parked and being warmed up when the check engine light came on. I drove the vehicle then to see if it had the same problem with power loss to the engine. Again there was reduced power to the engine/transmission. Notified Toyota who had the vehicle towed in and they recovered code P1614. This time the dealer claimed the problem was the r&r air assembly stating this was the cause of the problem, replaced it and claimed they had fixed the problem. Toyota corporation and my local dealership both have been informed of this serious safety problem with the engine shutting down while driving. On 11/9/2010, the arbitration the board related that "there have not been an unreasonable number of repairs for the same nonconformity." therefore, they denied my claim for a new vehicle. An engine shutting down/reduced power to the engine causing loss of control over the vehicle to me is a very serious safety problem.
UNKNOWN OR OTHER, ENGINE AND ENGINE COOLING



2010 TOYOTA COROLLA with 162000 miles

The vsc light is flashing, the traction control warning light is on as well as the check engine light. The traction control button does not work either now. I plugged in an obd scanner and got a C1201 error code which we were not able to clear. I don't recall if we were moving, parked out just turned the car on when the lights started but they will not shut off when the car is running.
ELECTRONIC STABILITY CONTROL, ELECTRONIC STABILITY CONTROL



2008 TOYOTA TUNDRA with 55000.0 miles

My truck was parked for 3 days, then when i started the engine all of the traction control lights started flashing, the check engine light remained on steady, and 4lo light flashed, truck would not travel over 30 mph and became very sluggish. This has happened three times in one week, and disconnecting battery for a few minutes cleared the problem. Local dealership said the problem is a "failed actuator ecu assembly failed communication C1201". Cost of repair is $2,280.41. Warranty does not cover repair because this part is only covered by the 3 year/36000 mile warranty. Drivetrain warranty does not cover this component. This is a safety concern because when this problem occurs while driving there is no warning and could result in a multiple vehicle accident. The only other part that causes this problem is an air pump assembly which is now required to be covered by Toyota for 10 years or 150,000 miles. Very discouraging to own a truck less than five years old with 55,000 miles and requires a $2300 repair.
ENGINE AND ENGINE COOLING, POWER TRAIN



2006 TOYOTA RAV4 with 61000.0 miles

We were on the road (on a family vacation). The day that we were coming back the check engine light, the vsc light and the slip warning light came on as we were pulling out of the hotel parking lot. On the way to the dealer, i also felt like the car was misfiring. The dealer found "multiple codes P0304, P0305, P0306, P0356, P1578, C1201. #6 coil malfunctioning. Recommend replace #6 coil pack and recheck. Possible that other coil may fail from the result of #6 coil failing." #6 coil pack was replaced and the Rav4 has been running fine since. The dealer also said that "typically after one coil goes the others follow shortly after", so i will keep an eye open for that. It is strange since ignition coils have a long life expectancy. I checked on-line and there seems to be a high failure rate with coil pack part # 90919-02251, which is the original part that came with the car. I made sure the part was replaced with the latest revision (90919-a2007) of the new part numbers (90919-a2002, 90919-a2004 or 90919-a2007) that Toyota changed to. It is also interesting that most of the failures happen with #6, #4 and #5 coils (in that order). The failures seem to concentrate around the right front corner, which is close to the radiator (hot fluid) exit. Maybe that is why the later revision part # coil packs have a double metallic screen outside the plastic housing, to protect the assembly.
ELECTRONIC STABILITY CONTROL, ELECTRICAL SYSTEM ENGINE AND ENGINE COOLING



2005 LEXUS GS300

Transmission has failed error codes P0751,P2757,C1201 car has 40,700 miles!
POWER TRAIN,



2005 SUZUKI VERONA with 45102.0 miles

I own a 2005 Suzuki Verona lx and my abs light and service engine light came on and stayed on. Took to dealer and it was computer scanned and found C1200 C1201 and found a short to ground in wire near left front fender well. Short was repaired. And lights went out. While driving home the abs light come on. I returned to dealer and was told that they needed to order a part for the hub on the car. It had to be ordered.
ELECTRICAL SYSTEM,

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