C1190 — Speed Wheel Sensor LF Input Short Circuit To Battery

chassis (brakes/steering/suspension)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm C1190 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many C0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the speed wheel sensor LF input short circuit to battery for damage, corrosion, chafing or poor contact.
Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm C1190 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for C1190 (parts and labor, USD, independent shop rates): Repair wiring or connectors: $80–$250; Replace the faulty sensor or actuator: $150–$500; Control module repair: $300–$1,000. Overall, fixing C1190 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What are the symptoms of C1190?

Drivers most often notice: the affected system operates intermittently or not at all, Check Engine Light on, increased fuel consumption in some cases, possible limp mode depending on the affected component.

Is it safe to drive with C1190?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

What does OBD2 code C1190 mean?

Speed Wheel Sensor LF Input Short Circuit To Battery (C1190): a chassis (brakes/steering/suspension) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by control module driver fault, poor ground connection, blown fuse feeding the circuit.

Will C1190 clear itself?

Sometimes C1190 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What is the most common cause of C1190?

The most common causes are: control module driver fault, poor ground connection, blown fuse feeding the circuit.

The left-front wheel speed sensor feeds critical data to the ABS and traction control systems. When the powertrain control module detects that the signal wire has been shorted directly to battery voltage, it logs OBD2 trouble code C1190. This code falls squarely in the chassis category, which means the problem lives in the brakes, steering, or suspension hardware rather than the engine itself.

The control unit constantly monitors the sensor circuit against factory-defined thresholds. When the voltage on the signal line spikes well above normal operating range — because it is tied to battery positive — the module flags this as a fault and illuminates the check engine light. C1190 typically requires multiple drive cycles to set, and when it does, the module saves a freeze frame snapshot containing RPM, engine load, coolant temperature, and vehicle speed at the exact moment the fault appeared. Reviewing that snapshot first often points you straight at the root cause.

Common Symptoms of C1190

The wheel speed sensor circuit cuts out or quits entirely
Check engine light activates and remains on
Fuel mileage suffers noticeably in some vehicles
Vehicle may enter reduced-power or limp-home mode
Traction control or ABS warning lamps illuminate
Unusual braking behavior under slippery conditions

Typical Causes of C1190

Wiring in the circuit is broken, frayed, or shorted to power
Connector pins are corroded, loose, or physically damaged
The wheel speed sensor itself has failed internally
A fuse that protects the circuit has blown
Ground connection for the circuit is loose or corroded
Wiring harness chafing from road debris or suspension movement

How to Diagnose C1190

Plug in an OBD2 scanner and confirm C1190 is stored in the ECU. Save the freeze frame data immediately — it records engine conditions at the exact moment the fault occurred.
Scan for any other trouble codes. Intermittent sensor codes often mask an underlying wiring problem. Check manufacturer TSBs for your specific make and model — some C0xxx issues have known factory remedies or software patches.
Inspect the wiring harness and connector at the left-front wheel speed sensor. Look for damaged insulation, broken strands, corrosion buildup, or pins that are bent or pushed out of position.
With the connector unplugged, use a multimeter to check reference voltage, ground integrity, and signal wire continuity at the sensor.
Reconnect the sensor and perform a wiggle test on the harness while monitoring live data. Any signal dropouts indicate a broken wire inside the insulation.
Clear the code, then drive the vehicle through a complete drive cycle that recreates the freeze frame conditions. C1190 returning confirms the fault is still present.

Repair Options for C1190

Address the cheapest possible cause before spending money on major components. Depending on what the diagnosis uncovers, here are typical repair scenarios:

Wiring repair or connector replacement: $80–$250
Replace failed wheel speed sensor: $150–$500
Control module diagnosis and repair: $300–$1,000

Total Cost to Fix C1190

Parts and labor for C1190 at independent shop rates typically break down as follows: wiring or connector work runs $80 to $250, a new wheel speed sensor installation costs $150 to $500, and control module service ranges from $300 to $1,000. Most situations land somewhere in the $150–$500 range. The total bill depends entirely on which part is actually faulty. Get an accurate diagnosis before purchasing any components — the most expensive repair option is almost never where you should start.

Can You Drive with C1190?

Severity level: short. In most cases the vehicle remains drivable, though you may notice reduced performance or limited auxiliary system operation. If the car stalls, fails to start, or triggers brake or steering warnings, treat the situation as urgent and stop driving immediately. Have the system inspected as soon as reasonably possible.