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Is your ECU faulty?
At Specialized ECU Repair, we understand how frustrating and inconvenient ECU (Electronic Control Unit) problems can be. Our team of experienced technicians is dedicated to accurately diagnosing and resolving ECU issues, helping get your Porsche or Ferrari back on the road—quickly and safely.
Watch the videos below to learn how you can identify the signs of a faulty ECU and understand the steps for proper diagnosis.
If you’re experiencing any of the issues below, your ECU may be failing:
- Check engine light stays on after reset
- Vehicle was jump-started with reverse polarity
- Engine shuts off unexpectedly or intermittently
- Water or fire damage visible on the ECU
- No spark or weak spark output
- No fuel injection pulse or fuel pump activation
- Intermittent cranking or starting problems
- ECU overheating due to internal component failure
- Broken or damaged connector pins on the ECU
- Loss of communication with diagnostic scanner
- Checksum or memory errors
- Replaced ECU does not match the vehicle’s security coding
Examples of physical or environmental damage that we see on most ECU’s:
Additional Symptoms That May Indicate ECU Failure
Beyond the most common signs, other symptoms can also point to a failing ECU and significantly affect your vehicle’s performance:
Erratic or unstable idle
Engine stalling, especially at low speeds or idle
Poor running condition or reduced power
Excessive fuel consumption
Misfiring cylinders
Failure to pass emissions testing
Recommended Components to Check Before Replacing Your ECU
If you’re experiencing issues like those described above, we recommend testing (or replacing) the following components, depending on the symptom:
- Ignition coil, spark plugs, or ignition module
(Common causes of misfires) - DME relay or main relay
(Can prevent the car from starting or supplying power to the ECU) - Fuel injectors
(May lead to misfires or poor engine performance) - Idle control valve
(Can cause erratic or inconsistent idle) - TDC and RPM sensors
(Crucial for engine starting—failure can prevent ignition) - Air flow sensor (MAF) or air intake sensors
(May cause poor performance, hesitation, or backfiring)
- Throttle position sensor (TPS)
(Can result in poor throttle response or lack of acceleration) - Alternator
(Overcharging can damage ECU and other electrical systems) - Wiring harness
(Loose, frayed, or corroded ground points can cause intermittent issues) - Relays
(May affect fuel pump activation and other essential functions) - Fuses
(Can interrupt voltage supply to key engine components)
Avoid Costly Repairs – Let Us Test Your ECU First
Before spending time and money on diagnostics and replacement sensors, consider having your ECU (DME) professionally tested.
We offer bench testing for just $149, providing a fast and accurate way to determine if your ECU is the root of the problem.
Let us help you eliminate the guesswork and get your vehicle back on the road.
