On naturally aspirated and turbocharged petrol engines, 1654 almost exclusively points to Cylinder 4’s fuel injector. This injector is responsible for precisely metering fuel into the fourth cylinder. When the Engine Control Unit (ECU) detects an abnormal resistance or voltage in that injector’s wiring, it logs code 1654.
Symptoms on petrol:
I strongly recommend putting your vintage Renault through a voluntary MOT test. Here is why: mot 1654 renault
The electronic accelerator pedal sends a voltage signal to the ECU dictating how much torque the driver wants. If the potentiometer inside the pedal is failing, or if the wiring plug under the dashboard is loose, the ECU may receive an implausible signal, resulting in a DF1654 code.
If you own a Renault CLIP diagnostic tool or a generic OBD2 scanner capable of reading live data (e.g., Delphi, Autel, Launch), follow this structured approach: On naturally aspirated and turbocharged petrol engines, 1654
Perform a global scan. Is 1654 accompanied by other codes? Look for:
Surprisingly, yes—but with caveats.
However, MOT 1654 often leads to increased particulate emissions or smoke, which will fail the diesel smoke test (Meter reading > 3.0 m⁻¹ for turbo diesels).
Verdict: Do not attempt an MOT test with an active MOT 1654 code. Fix it first. However, MOT 1654 often leads to increased particulate
If you’ve typed "MOT 1654 Renault" into a search engine, you are likely in one of two situations:
Let’s clear up the confusion. Spoiler alert: This isn’t a secret horsepower rating, a limited-edition Clio, or a banned F1 engine code. It is something much more mundane—but useful to know.