Fault code P0264 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0264 – Cylinder 2 Injector Circuit Low

P0264: Causes, signs and repairs

Error code P0264 is displayed and the check engine light is on - what does this mean?

The DTC P0264 is recognized by the OBD/EOBD system if there is a problem with the injection valve of the second cylinder (cylinder 2). This trouble code indicates a low voltage in the control circuit of the injector, which impairs the proper fuel supply.

What can cause this fault code?

Defective injector of the second cylinder
Damaged or corroded cable in the injector circuit
Loose or corroded plug connections on the injector
Defective engine control unit (ECU/PCM)
Short circuit in the wiring
Interrupted ground connection
Defective fuel pump or low fuel pressure
Dirty or clogged fuel filter

What symptoms occur in parallel with fault code P0264?

Engine running unevenly: The engine runs unevenly or jerks when idling
Loss of power: Noticeable reduction in engine power when accelerating
Increased fuel consumption: Significantly higher consumption than usual
Starting problems: Difficult starting or longer starting times
Misfiring: Irregular combustion in the affected cylinder
Black smoke: Dark exhaust fumes from the exhaust pipe
Check engine light: Permanent activation of the warning light

How can the problem of error code P0264 be rectified?

The repair requires a systematic diagnosis to identify the exact cause.
Replacement of the defective injection valve on the second cylinder after prior testing with a multimeter
Repair or replace damaged cables in the injector circuit after visual inspection and electrical measurement
Cleaning and fastening of all plug connections on the injector and application of contact spray
Replacement of the engine control unit after all other causes have been ruled out by a specialist company
Eliminate short circuits by completely checking the wiring with an oscilloscope
Repair the earth connection by cleaning the contact points and tightening the screws
Replacing the fuel pump and fuel filter if the system pressure is low

FAQ - Frequently asked questions about DTC P0264

Can I continue driving with error code P0264?

It is possible to drive short distances, but you should have fault code P0264 rectified as quickly as possible. Driving longer distances can lead to engine damage and increased fuel consumption.

How much does it cost to repair fault code P0264?

The costs vary depending on the cause: injector cleaning €80-150, injector replacement €200-400, cable repair €100-250, engine control unit €800-1500. A precise diagnosis costs around €100-150.

Can I repair the code P0264 myself?

Simple work such as checking plug connections is possible, but the EOBD error code P0264 usually requires specialist knowledge. Injector work should be carried out by a workshop.

How long does it take to repair P0264?

The repair time depends on the cause: plug connections 30 minutes, injector replacement 2-3 hours, cable repair 1-4 hours, ECU replacement up to one working day.

Does error code P0264 occur frequently?

DTC P0264 is a relatively common fault code, especially in vehicles with higher mileage. Regular maintenance and the use of fuel system cleaners can prevent it.

What tools do I need to diagnose P0264?

To diagnose trouble code P0264, you will need an OBD scanner, multimeter, oscilloscope and special injector testing equipment. Professional diagnostic equipment is recommended for a precise fault analysis.

Vehicles in which fault code P0264 occurs most frequently

Error code P0264 is a cross-manufacturer OBD-II code and can occur in various vehicle brands, but is most common in the following vehicles:

Audi: A3, A4, A6, TT (2000-2015)
BMW: 3 Series, 5 Series, X3, X5 (2001-2014)
Ford: Focus, Fiesta, Mondeo, Galaxy (1998-2016)
Mercedes-Benz: C-Class, E-Class, ML-Class (2000-2013)
Opel: Astra, Vectra, Zafira, Corsa (1999-2017)
Peugeot: 206, 307, 407, 308 (2001-2015)
Renault: Megane, Laguna, Scenic, Clio (2000-2016)
Volkswagen: Golf, Passat, Polo, Touran (1999-2014)
Volvo: S60, V70, XC90, S80 (2001-2013)
Citroën: C4, C5, Xsara Picasso (2002-2014)
If the code P0264 occurs in your vehicle, you should first have a thorough diagnosis carried out. Many garages offer a free error code readout, which will give you an initial assessment. This error code is particularly common in older vehicles with high mileage, as the injection valves become more susceptible to wear and deposits. Regular maintenance and the use of high-quality fuels can significantly reduce the occurrence of this EOBD error code.

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