C1511: Torque Sensor 1 Malfunction (Torque Sensor Abnormal)
2 vehicles · 2 makes · $400-$5,000 repair
Most Reported On
C1511 is an OBD-II diagnostic trouble code meaning “Torque Sensor 1 Malfunction (Torque Sensor Abnormal).” A Toyota/Lexus/Scion-specific chassis code in the electric power steering (EPS) system. The torque sensor in the steering column converts the rotational torque input from the steering wheel into an electrical signal that tells the power steering ECU how much steering effort the driver is applying, and therefore how much assist to provide. C1511 sets when the ECU sees an abnormal or out-of-range signal from torque sensor 1. The usual result is that the ECU disables power assist as a fail-safe, so the steering becomes very heavy — especially at parking speeds — with the EPS/power steering warning light on. The car remains steerable but takes noticeably more effort. This code is most commonly reported on 2019-2020 Toyota RAV4, and 2016-2022 Mercedes-Benz GLE (GLE 300d, GLE 350, GLE 400, GLE 450, GLE 350 4MATIC, GLE 450 4MATIC), with repair costs ranging from $400 to $5,000.
Common Causes
Typical Repair Cost
Based on 2 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C1511 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
Vehicles Affected (2)
FAQ
What does C1511 mean?
C1511 stands for "Torque Sensor 1 Malfunction (Torque Sensor Abnormal)." A Toyota/Lexus/Scion-specific chassis code in the electric power steering (EPS) system. The torque sensor in the steering column converts the rotational torque input from the steering wheel into an electrical signal that tells the power steering ECU how much steering effort the driver is applying, and therefore how much assist to provide. C1511 sets when the ECU sees an abnormal or out-of-range signal from torque sensor 1. The usual result is that the ECU disables power assist as a fail-safe, so the steering becomes very heavy — especially at parking speeds — with the EPS/power steering warning light on. The car remains steerable but takes noticeably more effort.
What are the most common causes of C1511?
The most common causes of C1511 are: Faulty torque sensor, which is built into the steering column assembly on most applications, Open, shorted, or chafed torque sensor wiring harness, Poor or corroded connection at the sensor or ECU connector, Torque sensor zero point/calibration not performed after column, ECU, or alignment work, Low system voltage or a weak battery/charging system, Failed power steering ECU. The specific cause varies by vehicle.
How much does it cost to fix C1511?
Repair costs for C1511 range from $400 to $5,000, depending on the vehicle and root cause.
Which vehicles are affected by C1511?
Au7o has documented C1511 across 2 vehicle models from 2 manufacturers: Mercedes-Benz, Toyota.
Sources (5)
- RecallNHTSA Recall 20V-373: Loss of Electric Power Steering Assist
- RecallToyota Safety Recall 20TA11 Dealer Letter: Potential Loss of Power Steering Assist
- articleMercedes Power Steering Malfunction, See Operator's Manual - YOUCANIC
- TSBNHTSA TSB MC-10231025 - Warning "Steering": No Power Steering Following Engine Start
- RecallNHTSA Recall 16V899000 - Mercedes-Benz Power Steering Assist May Deactivate (connector water intrusion)
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.