Renault believes the issues that have blighted its pre-season are not fatal but the manufacturer admits it remains some distance behind rivals Mercedes and Ferrari.
The power-unit supplier, which has played a key role in the success of Red Bull and Sebastian Vettel over the last four years, endured a disastrous first test in Jerez last month.
Red Bull completed just 21 laps over the four days due to a series of problems, most due to Renault, which has struggled to adapt to the new regulations and introduction of the 1.6-litre turbo-charged V6s.
The French manufacturer encountered hardware and software woes to such an extent it has led to suggestions Red Bull are already on the lookout for a new supplier for 2015.
Remi Taffin, head of Renault Sport F1 track operations, is hopeful a lot of the faults have been corrected ahead of the second test that begins in Bahrain next Wednesday.
F1 2014 car launch - The era of the 'anteaters'
F1 2014 car launch - The era of the 'anteaters'
1/17 McLaren - MP4-29
The Woking-based outfit launched their MP4-29 on January 24, with drivers Jenson Button and rookie Kevin Magnussen joined by reserve driver Stoffel Vandoorne. However, the main talking point was the absence of team principal Martin Whitmarsh following the return of Ron Dennis
2/17 Williams - FW35
Williams were the first to unveil their car, albeit a computer-generated design. The real thing is yet to roll out of the garage at Jerez, with some last minute adjustments holding up its debut. Former Ferrari driver Felipe Massa joins the team to try and return them to the top of the sport, and he will partner Valteri Bottas who is retained from last season
3/17 Ferrari - F14T
The Italian manufacturers have pushed Red Bull hard in the past few years, but they hope the F14T will finally surpass their rivals and give either Fernando Alonso or the returning Kimi Raikkonen another World Championship to add to their collection
4/17 Ferrari - F14T
Raikkonen gets reacquainted with the Ferrari cockpit after a four-year absence from the prancing horse, but...
5/17 Ferrari - F14T
His joy is short lived as he becomes the first to suffer from unreliability as his car stops on track, requiring a lift back to the pit lane. He certainly won't be the last though
6/17 Sauber - C33-Ferrari
Sauber have followed the 'anteater' nose design for 2014, and hope for a more successful year than last with Adrian Sutil joining Esteban Gutierrez at the wheel
7/17 Lotus E22
Lotus launched their 2014 challenger, the E22, on the same day as team principal Eric Boullier left the team, with Gerard Lopez replacing him at the helm. With Romain Grosjean now the team leader, many will be watching how he and livewire Pastor Maldonado get on this year. Thta's if they turn up, as their absence from Jerez doesn't bode well
8/17 Mercedes - W05sup
Nico Rosberg and Lewis Hamilton unveil the Mercedes W05sup at Jerez, which thankfully avoids the 'anteater' nose
9/17 Mercedes - W05sup
Many are tipping Hamilton and Rosberg to take the fight to Red Bull this year with the W05sup undoubtedly one of the nicer looking cars on this season's grid, but will it be as fast?
10/17 Red Bull - RB10
Sebastian Vettel and Red Bull are going for a record-equalling fifth straight drivers' and constructors' championship. They have also avoided the 'anteater' nose, and rival Mercedes for the best looking car of the year award. Is there anything Red Bull don't want to win? Daniel Ricciardo makes the step-up from Toro Rosso to replace the now absent Mark Webber
11/17 Toro Rosso - STR9
Toro Rosso's design sure isn't pretty, but they have taken a step into the unknown with rookie 19-year-old Daniil Kvyat. The Russian impressed in practice towards the end of last season, but how will he get on against his more experienced team-mate Jean-Eric Vergne?
12/17 Toro Rosso - STR9
The 'anteater' nose of the Toro Rosso SRT9, likened to a sex toy by lingerie makers Ann Summers
13/17 Force India - VJM07
The ever-impressive Nico Hulkenburg returns to the team he left at the end of 2012 having missed out on a seat at Ferrari, Lotus and McLaren. The German will have a point to prove once more, but he'll have a difficult enough time to beat team-mate Sergio Perez first
14/17 Caterham - CT04
After a short delay which saw their early morning unveiling cancelled, Caterham eventually rolled out their CT04 in the afternoon, with another rookie in Marcus Ericsson at the wheel, while the returning Kamui Kobayashi took the picture
15/17 Williams - FW36
Williams finally got their FW36 running after a delay on day one of testing at Jerez, with Valteri Bottas taking to the track
16/17 Marussia - MR03
Two days later than scheduled, Max Chilton eventually left the garage in the Marussia MR03 for its first run at Jerez
17/17 Marussia - MR03
Chilton brings the car back in after completing an installation lap
"We left the first test with a lot to do on our side, mainly facing hardware and software issues," said Taffin in a conference call.
"With regard to the hardware we are now confident the problem we had in the first test has been solved and we will be in a position to go out in Bahrain without all these issues.
"As for the software we've improved our level. We're still behind our initial schedule, but now beyond what we would have done in the first test.
"Again we should be okay in Bahrain to go out on the first day with a car that should be working.
"We are ready to do what we would have liked to have done in the first test, which is to properly test the power unit and give our customers a way to discover their cars."
Red Bull, along with fellow Renault customers Toro Rosso, Lotus and Caterham will naturally face anxious moments when their cars take to the Sakhir circuit.
If there is a repeat of the incidents that unfolded in Jerez then Red Bull and Vettel's hopes of a fifth straight crown could be scuppered before the season starts in Melbourne in four weeks' time.
Taffin added: "There is development on the hardware and software. It's not a fatality, but that's where we are.
"We are trying do everything at the same time, but then sometimes we have to prioritise so it's not easy to have everything altogether at once."
The suggestion is the various components within the power unit are so complicated they are not 'talking to one another' via the software.
"It's not a communication problem. It's how you make them work together," added Taffin.
"It's not like one is not talking to the other, it's basically the language they use.
"We have to get this working, and what we hope to achieve on the first day in Bahrain.
"If the work we have done recently is okay, which we think it is, then we should see the difference in Bahrain, with cars out on track, which will mean we have solved the problem."
With regard to Renault's current level of competitiveness compared to Mercedes and Ferrari, Taffin added: "We're still behind schedule, but it's not a question of months.
"We are at least where we would have sought to be for the first test, so maybe now we are three weeks behind, and now we are on a recovery plan.
"We're now going to go into Bahrain with what we would have liked to have finished the first test with.
"As for our rivals, let's put it this way, they are probably four days ahead of us as they had a proper test in Jerez, and we didn't."