*101 OPINION ON REMAND
This case is before us on remand for consideration of the State’s contention that appellant pro se Thomas Franklin Shoe is estopрed from arguing that his 1997 conviction for driving while intoxicated (DWI) is illegal because he accepted the benefit of a fine not being assessed.
Pursuant to a plea bargain agreement, appellant was convicted of DWI on October 16, 1997, and sentenced to forty days in jail. On March 1, 2002, appеllant filed an application for writ of habeas corpus in the trial court pursuant to the Texas Constitution, arguing that the conviction and judgment are void because the minimum legal sentence was not imposed. See Tex. Const, art. V, § 16. When the trial court assessed appellant’s sentence in 1997, it did not impоse a mandatory minimum fine. 1 The trial court denied the application for writ of habeas corpus, stating it “finds that the law does not support the granting оf a [Post Conviction] Writ of Habeas Corpus for the reasons alleged.”
In our prior opinion, we determined that we had jurisdiction to consider the аppeal from the denial of relief on appellant’s application for writ of habeas corpus and held that the judgment was illegal, null, and void because the sentence assessed by the trial court pursuant to the plea bargain is less than the minimum provided by law.
See Ex parte Shoe,
02-02-099-CR,
The issue before us now is whether an applicant for writ of habeas corpus is es-topped from challenging an illegal sentence for which he entered into a plea bargain аgreement with the State. Although the Texas Court of Criminal Appeals has held that a void sentence may be challenged at any time,
see Ex parte Mclver,
In preserving error for appellate review in Texas, our system may be thought to contain rules of three distinct kinds: (1) absolute requirements and prohibitions; (2) rights of litigants which must be implemented by the system unless expressly waived; and (3) rights of litigants which are to be implemented upon request.
Marin v. State,
The doctrines of waiver and estoppel are distinct.
See Prystash v. State,
While the sentence assessed by the trial court in this case is illegаl, appellant requested the sentence and accepted the benefit of the lesser sentence when he entered into the plea bargain agreement with the State. He benefitted from not having the fine assessed against him. Appellant should not now be permitted to challenge the lesser sentence — the benefit he received and for which he bargained—
*103
because events since the sentence was assessed nоw make that sentence less appealing to him.
3
See Williams,
The trial court’s judgment is affirmed.
Notes
. See Act of May 27, 1983, 68th Leg., R.S., ch. 303, § 3, 1983 Tex. Gen. Laws 1568, 1574-77, (amended 1987), repealed, by Act of May 29, 1993, 73d Leg., R.S., сh. 900, § 1.15, 1993 Tex. Gen. Laws 3586, 3704 (current version at Tex. Penal Code Ann. § 49.09 (Vernon Supp. 2004)); see also Act of May 29, 1993, 73d Leg., R.S., ch. 900, § 1.18(a), (b), 1993 Tex. Gen. Laws 3586, 3705 (stating change in law only applies to an offense "committed on or after the effective date of this article.... An offense committed before the effective date of this article is сovered by the law in effect when the offense was committed[.]”).
.
The State also directs us to cases where the court of criminal appeals has applied the doctrine of collateral estoppel even though those cases did not apply estoppel to аn illegal or void sentence.
See, e.g., Arroyo v. State,
. Appellant never challenged the illеgal sentence for the 1997 DWI offense until after his probation was revoked in 2000 for a 1999 DWI conviction, for which punishment was enhanced as a result of his 1997 conviction.
