C1511 on Toyota: How to Diagnose & Fix
Torque Sensor 1 Malfunction (Torque Sensor Abnormal)
1 Toyota model · 1 documented issue · 1 critical
C1511 on Toyota by model: symptoms, diagnosis and fix
Toyota/NHTSA Safety Recall 20V-373 (Toyota 20TA11; interim 20TB11) covers 46 certain 2019-2020 RAV4 and 2020 RAV4 Hybrid vehicles. A screw attaching the electric-power-steering gear cover may be missing or improperly tightened, allowing water to enter and eventually damage the steering gear. Power-assist loss increases steering effort, especially at low speed, and increases crash risk. Model year alone does not establish eligibility; Toyota lists 41 RAV4 and five RAV4 Hybrid vehicles produced within limited periods.
Common Symptoms
- Electric Power Steering System warning light may illuminate
- Power steering assist may be lost
- Steering effort increases most noticeably at low vehicle speeds
How to Fix
Check the complete VIN through Toyota's recall lookup or an authorized Toyota dealer. For an open 20TA11 campaign, the dealer replaces the complete steering gear assembly free of charge. This is not a seal-the-cover or retail-rack repair, and the removed 44250-series searches cannot determine the campaign part by model label alone. If steering suddenly becomes heavy or the EPS warning light illuminates, reduce speed, stop in a safe place and arrange dealer diagnosis or towing rather than continuing to rely on assist.
Owner tips & cautions
- TipBring the complete VIN to Toyota; the recall covers only a small production-defined group and cannot be confirmed from model year or trim alone.
- WarningDo not buy or install a steering rack from the removed links for an open recall. Toyota's campaign remedy is a dealer replacement performed free of charge.
Sources for this issue (2)
C1511 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C1511 mean on a Toyota?
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. On Toyota it is documented across 1 model: RAV4.
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 on a Toyota?
Repair costs vary widely with the root cause and Toyota model; each issue on this page carries its own estimate where one is published.
Looking for C1511 on a different make?
View C1511 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.