Fault code P1292 – a step-by-step guide to diagnosing and fixing it

Error code P1292 is displayed and the check engine light is on - what does this mean?

The DTC P1292 is a manufacturer-specific fault code that is recognized by the OBD system and typically indicates a problem with the cylinder head temperature sensor or the cooling system. This trouble code mainly occurs in Ford vehicles and indicates a fault in the engine temperature monitoring system.

What causes can this error code have?

• Defective cylinder head temperature sensor (CHT sensor)
• Damaged wiring to the temperature sensor
• Corroded or loose plug connections
• Defective engine control unit (ECU)
• Overheating of the engine
• Defective coolant temperature sensor
• Short circuit in the sensor wiring harness
• Faulty ground connection

What symptoms occur in parallel with fault code P1292?

• Engine performance problems: Reduced power and unsteady idling
• Signs of overheating: Increased engine temperature or overheating warnings
• Starting problems: Difficult starting, especially when the engine is cold
• Irregular engine smoothness: Jerking or stuttering while driving
• Increased fuel consumption: Poor fuel efficiency due to incorrect temperature values
• Check Engine Light: Permanently illuminated check engine light

How can the problem with fault code P1292 be rectified?

• Repairing fault code P1292 requires a systematic diagnosis of the temperature monitoring components.
• Replace the cylinder head temperature sensor: Locate the defective CHT sensor and replace it with a new original part, observing the correct installation position
• Check and repair the wiring: Inspect all cables to the temperature sensor for damage, breaks or chafing and replace defective cables
• Clean plug connections: Remove corrosion from the sensor plugs, treat contacts with contact spray and ensure a tight fit
• Check the cooling system: Check coolant level, test thermostat and water pump for proper function
• Diagnose the engine control unit: Test ECU with professional diagnostic software and reprogram or replace if necessary
• Check ground connections: Check all ground wires of the sensor for tight fit and freedom from corrosion