Alastair Cook says he has been given no assurances about his future as England one-day captain - but wants to lead the team into next year's World Cup.
Victory over India at Headingley on Friday came too late to save the series, which England lost 3-1.
Asked if he had been told if he would remain in charge of the one-day side, the 29-year-old said: "No I haven't."
Cook was given the one-day captaincy in 2011, leading England to the top of the ODI world rankings in 2012.
However, England have won only one series against another Test-playing nation since 2012 and have lost their last four at home, though they did reach the final of the Champions Trophy on home soil in 2013.
|England's one-day international focus|
|21 November - 16 December: ODI series in Sri Lanka (seven ODIs, two warm-ups)|
|7 January-1 February: ODI tri-series v Australia & India (in Australia)|
|14 February-29 March: ICC Cricket World Cup (in Australia & NZ)|
The Essex opener said he would "take it on the chin" if the selectors decided to remove the captaincy.
But he added: "While I still want to do the job and still believe I can do it then I will carry on doing it."
England will tour Sri Lanka in November and December before a tri-series in Australia preceding the World Cup, which starts in February.
Cook believes the sole focus on one-day cricket is an "exciting" chance to mount a strong challenge.
"We can concentrate on improving," he said. "Last time we had a focus like this we got to the Champions Trophy final.
"We've got an extended period of working on our games in one-day cricket which we have never had before."
Cook said England knew they had to focus on playing spin bowling better - and improve their approach in the closing overs of an innings.
"It's exciting that we've got this opportunity to really take big steps forward in one-day cricket and hopefully do something special at the end of it," he added.
After three heavy defeats against India, England reversed their poor run of form in 50-over cricket with a 41-run win in the final match of the series at Headingley.
Joe Root's 113 laid the foundations for success, and the 23-year-old drew praise from his skipper, who contributed 46.
"He played beautifully," added Cook. "It was one of those wickets where knocking ones was quite hard but if you went for the big shot it came on quite nicely.
"Rooty has had an outstanding summer. He's very adaptable and that is one of his greatest strengths. Coming in at number four, that role suits him."
India skipper Mahendra Dhoni blamed his side's defeat on a number of "soft dismissals".
"I think 300 was a par score on that wicket," said Dhoni. "To some extent we may have taken our foot off the gas and that is something we have to improve."