Winter preparation is well underway at Leader Specialist Components, with the UK-based global parts supplier naming an accelerator pedal and position sensor for the Vauxhall Corsa D (2007-2014), Corsa E (2015-2019) and Adam (2013-2019) its part of the week.
Fault code P2138 relates to a correlation problem between redundant accelerator pedal position sensor signals. On affected vehicles, this can trigger an engine management warning and reduced power – or ‘limp mode’.
Accelerator pedal sensors can develop internal electrical faults over time. In potentiometer-type designs, wear or gaps in the resistive tracks may cause a signal mismatch outside the tolerance window. Wiring damage, poor connections and supply or ground faults can also trigger the code.
When the temperature drops, intermittent faults warrant particular attention, although the precise cause should be confirmed through professional diagnosis – rather than attributed to temperature alone.
How to diagnose and repair
Technicians should begin their diagnosis by reading the stored fault codes and any available freeze-frame data. They should check the battery’s health and charging-system performance, then inspect the accelerator pedal connector and wiring for damage, corrosion or poor connections.
Using suitable diagnostic equipment, the technician should compare the accelerator pedal’s sensor signals throughout ‘pedal travel’ and check the relevant electrical supplies, grounds and circuits against the vehicle manufacturer’s specifications.
If testing confirms an internal pedal sensor fault, a replacement is likely needed with the correct application-specific part. LSC can provide a genuine replacement pedal and position sensor and is readily available via TecCom for next-day delivery.
Winter is here
As well as the throttle pedal and position sensor, LSC is confident the change in season will see a surge in enquiries for blower motors, pressure glow plugs and glow plugs, wiper linkages and motors. These are all available on TecCom.
Leader Specialist Components’ Joe Harrington said: “We want to inform our customers that we can provide solutions for the parts that are likely to receive enquiries for over the coming months.
“With over 40 years’ experience behind us, we understand how busy and under pressure the trade is over this period, so we are ready to cater demand and keep the supply chain moving quickly.”