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DTC codes / Suzuki codes / P1460

P1460 · SuzukiRadiator Fan Control System Fault

P1460 on Suzuki vehicles means the engine control module (ECM) has detected a fault in the radiator fan control system, which typically involves the fan relay, fan motor, or the wiring that connects them. The ECM commands the fan on under certain conditions and then monitors the circuit for expected voltage or current feedback; when that feedback is missing or out of range, it stores this code and illuminates the check engine light.

SystemPowertrain
Code typeSuzuki specific
SeverityMedium
Fix difficultyIntermediate
AreaAuxiliary emission controls

Symptoms you may notice

  • Check engine light illuminated on the dashboard
  • Radiator fan does not run at all, even when the engine is hot or the air conditioning is on
  • Radiator fan runs continuously whenever the ignition is on, even with a cold engine
  • Engine temperature gauge climbs higher than normal in traffic or at idle
  • Air conditioning performance drops because the condenser fan is not assisting airflow
  • Often no symptoms besides the warning light, especially if the fault is intermittent

Common causes, most likely first

  1. Failed radiator fan relay or fan control module
  2. Open or shorted wiring between the ECM and the fan relay or fan motor
  3. Seized or worn-out radiator fan motor drawing excessive current
  4. Blown fuse in the fan circuit, often caused by a failing motor
  5. Corroded or loose electrical connectors at the fan, relay, or ECM
  6. Faulty engine coolant temperature sensor sending incorrect signals to the ECM
  7. Internal ECM driver failure, though this is less common

How to diagnose and fix it

  1. Verify the code with a scan tool and check for any related codes in the engine and body control modules
  2. Inspect the fan circuit fuses and relays, swapping a known-good relay of the same type to see if the fan operates
  3. Command the radiator fan on using a bidirectional scan tool and listen for relay click and fan operation
  4. Measure voltage and resistance at the fan motor connector while the fan is commanded on to check for power and ground
  5. Check the engine coolant temperature sensor reading on live data to confirm it is plausible and not skewed
  6. Inspect the wiring harness for chafing, corrosion, or loose pins between the ECM, relay, and fan motor
  7. If all electrical checks pass, test the fan motor directly with fused jumper wires to confirm it turns freely and draws normal current

Fan relay failures that mimic a bad motor

  • A common misdiagnosis is replacing the radiator fan motor when the actual fault is a worn relay contact that only fails under heat or vibration.
  • Suzuki fan control circuits often use a low-side driver inside the ECM; a shorted fan motor can damage that driver, so always check motor current draw before installing a new ECM.
  • Intermittent P1460 codes frequently trace to corroded pins in the connector behind the radiator shroud, where water and road salt collect.
  • Some Suzuki models run the fan through a separate fan control module that can fail without setting any other codes, so testing the module output is essential.
  • The ECM may set P1460 even when the fan works normally if the feedback signal is missing, so do not assume the fan itself is faulty without checking the monitor circuit.

Can I keep driving with P1460?

You can drive short distances with the warning light on, but avoid heavy traffic, long idles, or hot weather until the fan is repaired because overheating can damage the engine. If the temperature gauge rises above normal, pull over and shut the engine off immediately.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for Suzuki vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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