Causes. Possible causes of OBD code P0234 Citroen. – Brake torque (brake on and throttle at wide open). – Transmission oil temperature (TOT) exceeds calibrated threshold. – Engine over temperature. – Ignition misfire exceeds the calibrated threshold. – Knock sensor (KS) failure.
You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information in order to accurately diagnose a code P2291. You may save yourself time by searching for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited.
You will find below several pictures which will help you find your OBD connector in your Citroen C4 Grand Picasso (2006 - 2013). The OBD II plug is located on the left of the steering wheel. Unscrew and remove the plastic cover around the headlights setting command.
