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ECU & PCM Repairs

The Engine Control Unit (ECU) and Powertrain Control Module (PCM) are critical components of modern vehicles, responsible for managing essential functions such as fuel injection, ignition timing, transmission shifting, and emissions control. When these systems fail, they can lead to a range of performance issues, including engine misfires, rough idling, power loss, high fuel consumption, and even complete engine failure.

At Onye Auto ECU Germiston, we specialize in diagnosing, repairing, and reprogramming faulty ECUs and PCMs to restore your vehicle’s optimal performance. Using state-of-the-art diagnostic tools and advanced repair techniques, we provide solutions for a wide variety of ECU and PCM issues, including:

✔ Corrupted Software & Firmware Issues
Over time, ECU software can become corrupted due to power surges, battery failures, or incorrect software updates. We perform:

• Software restoration and reinstallation to ensure smooth engine operation

• Factory resetting and recalibration to match the vehicle’s original settings

• Custom firmware updates for performance enhancements

✔ Water Damage Repairs
Exposure to moisture or flooding can short-circuit the ECU/PCM, causing erratic behavior or complete failure. Our experts:

• Carefully disassemble and clean affected circuit boards

• Replace or repair corroded components

• Apply protective coatings to prevent future moisture-related damage

✔ Burnt Circuits & Power Failures
ECUs operate under high electrical loads, and power fluctuations, faulty alternators, or jump-starting mishaps can burn essential circuits. We offer:

• Component-level board repairs to fix damaged circuits

• Replacement of burned-out transistors, resistors, and diodes

• Voltage regulation adjustments to prevent future failures

✔ Communication Failures with Sensors & CAN Bus Issues
A vehicle’s ECU relies on various sensors (oxygen sensor, MAF sensor, crankshaft sensor, throttle position sensor, etc.) for accurate performance. Issues like wiring faults, broken connections, or sensor malfunctions can cause:

• Poor acceleration or engine hesitation

• Check Engine Light (CEL) warnings

• Hard starting or engine stalling

We provide full diagnostics and rewiring solutions, ensuring proper communication between the ECU and the vehicle’s electronic network (CAN Bus System).

✔ Overheating & Power Supply Issues
The ECU needs a stable power supply to function correctly. Faults in the voltage regulator, alternator, or ground wiring can cause:

• ECU overheating, leading to intermittent failures

• Erratic fuel injection and ignition timing

• Battery drain issues due to excessive ECU power draw

Our technicians inspect wiring harnesses, fuses, and ground connections, ensuring the ECU receives the correct voltage levels for reliable operation.

Additional ECU & PCM Repair Services:

🔧 ECU Reflashing & Data Recovery – Restoring lost or damaged ECU data
🔧 EPROM & EEPROM Chip Repairs – Fixing internal memory chips to restore ECU functions
🔧 Immobilizer Removal & Reset – Resolving security lockout issues preventing the car from starting
🔧 ECU Benchmark Testing – Testing repaired ECUs before reinstallation to ensure flawless performance

At Onye Auto ECU Germiston, we prioritize accuracy, affordability, and long-term reliability in all our ECU & PCM repairs. Whether you’re dealing with a minor software glitch or a complete ECU failure, our team is ready to get you back on the road with a fully functional and optimized vehicle.